DELL P127F Latitude 5540 Laptop Owner’s Manual
- May 15, 2024
- Dell
Table of Contents
- DELL P127F Latitude 5540 Laptop
- Product Information
- Product Usage Instructions
- Frequently Asked Questions
- Views of Latitude 5540
- Set up your Latitude 5540
- Specifications of Latitude 5540
- Description Display type
- Controller
- Operating and storage environment
- Working inside your computer
- Removing and installing Customer Replaceable Units
- Removing and installing Field Replaceable Units
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
DELL P127F Latitude 5540 Laptop
Product Information
Specifications
- Model: Latitude 5540
- Regulatory Model: P127F
- Regulatory Type: P127F001
- Date: March 2023
- Revision: A00
Product Usage Instructions
Views of Latitude 5540
- microSD-card slot: Reads from and writes to the microSD-card.
- Universal audio jack: Connect headphones or a headset (headphone and microphone combo).
- USB 3.2 Gen 1 port: Connect devices such as external storage devices and printers. Provides data transfer speeds up to 5 Gbps.
- USB 3.2 Gen 1 port with PowerShare: Connect devices such as external storage devices and printers. Provides data transfer speeds up to 5 Gbps. PowerShare enables you to charge your USB devices even when your computer is turned off.
- HDMI 2 port: Connect to a TV, external display, or another HDMI-in enabled device. Provides video and audio output.
- Network port: Connect an Ethernet (RJ-45) cable from a router or a broadband modem for network or Internet access, with a transfer rate of 10/100/1000 Mbps.
Charging via USB PowerShare Port
To charge USB devices using the PowerShare port, follow these steps:
- If the charge on your computer’s battery is less than 10 percent, connect the power adapter to charge your computer and USB devices connected to the PowerShare port.
- If a USB device is connected to the PowerShare port before the computer is turned off or in hibernate state, disconnect and connect it again to enable charging.
- Certain USB devices may not charge when the computer is turned off or in sleep state. In such cases, turn on the computer to charge the device.
Frequently Asked Questions
Q: How do I drain residual flea power (perform hard reset)?
A: To drain residual flea power, follow these steps:
- Shut down the computer completely.
- Disconnect the power adapter and remove the battery (if applicable).
- Press and hold the power button for about 15-20 seconds.
- Reconnect the power adapter (and battery if removed) and turn on the computer.
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Latitude 5540
Owner’s Manual
Regulatory Model: P127F Regulatory Type: P127F001 March 2023 Rev. A00
Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of
your product. CAUTION: A CAUTION indicates either potential damage to hardware
or loss of data and tells you how to avoid the problem. WARNING: A WARNING
indicates a potential for property damage, personal injury, or death.
© 2023 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies,
Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Other trademarks may be trademarks of their respective owners.
Right
Views of Latitude 5540
1. microSD-card slot Reads from and writes to the microSD-card.
2. Universal audio jack Connect headphones or a headset (headphone and
microphone combo).
3. USB 3.2 Gen 1 port Connect devices such as external storage devices and
printers. Provides data transfer speeds up to 5 Gbps.
4. USB 3.2 Gen 1 port with PowerShare Connect devices such as external
storage devices and printers. Provides data transfer speeds up to 5 Gbps.
PowerShare enables you to charge your USB devices even when your computer is
turned off. NOTE: If the charge on your computer’s battery is less than 10
percent, you must connect the power adapter to charge your computer, and USB
devices connected to the PowerShare port.
NOTE: If a USB device is connected to the PowerShare port before the computer
is turned off or in hibernate state, you must disconnect and connect it again
to enable charging.
NOTE: Certain USB devices may not charge when the computer is turned off or in
sleep state. In such cases, turn on the computer to charge the device.
5. HDMI 2 port Connect to a TV, external display or another HDMI-in enabled
device. Provides video and audio output.
6. Network port Connect an Ethernet (RJ-45) cable from a router or a
broadband modem for network or Internet access, with a transfer rate of
10/100/1000 Mbps.
7. Security-cable slot (wedge-shaped) Connect a security cable to prevent
unauthorized movement of your computer.
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Views of Latitude 5540
Left
1. Thunderbolt 4.0 port with Power Delivery and DisplayPort Supports USB4,
DisplayPort 1.4, Thunderbolt 4 and also enables you to connect to an external
display using a display adapter. Provides data transfer rates of up to 40 Gbps
for USB4 and Thunderbolt 4. NOTE: You can connect a Dell Docking Station to
the Thunderbolt 4 ports. For more information, search in the Knowledge Base
Resource at www.dell.com/support. NOTE: A USB Type-C to DisplayPort adapter
(sold separately) is required to connect a DisplayPort device. NOTE: USB4 is
backward compatible with USB 3.2, USB 2.0, and Thunderbolt 3. NOTE:
Thunderbolt 4 supports two 4K displays or one 8K display.
2. Thunderbolt 4.0 port with Power Delivery and DisplayPort Supports USB4,
DisplayPort 1.4, Thunderbolt 4 and also enables you to connect to an external
display using a display adapter. Provides data transfer rates of up to 40 Gbps
for USB4 and Thunderbolt 4. NOTE: You can connect a Dell Docking Station to
the Thunderbolt 4 ports. For more information, search in the Knowledge Base
Resource at www.dell.com/support. NOTE: A USB Type-C to DisplayPort adapter
(sold separately) is required to connect a DisplayPort device. NOTE: USB4 is
backward compatible with USB 3.2, USB 2.0, and Thunderbolt 3. NOTE:
Thunderbolt 4 supports two 4K displays or one 8K display.
3. Battery-status light Indicates the battery-charge status. Solid
yellow–Battery charge is low. Blinking yellow–Battery charge is critical.
4. Smart-card reader slot (optional)
Views of Latitude 5540
9
Top
1. Power button with optional fingerprint reader Press to turn on the
computer if it is turned off, in sleep state, or in hibernate state. When the
computer is turned on, press the power button to put the computer into sleep
state; press and hold the power button for 10 seconds to force shut-down the
computer. If the power button has a fingerprint reader, place your finger on
the power button steadily to log in.
NOTE: The power-status light on the power button is available only on
computers without the fingerprint reader. Computers that are shipped with the
fingerprint reader that is integrated on the power button will not have the
power-status light on the power button.
NOTE: You can customize the power-button behavior in Windows. 2. Keyboard 3.
Fingerprint reader (optional)
Press your finger on the fingerprint reader to log in to your computer. The
fingerprint reader enables your computer to recognize your fingerprints as a
password.
NOTE: Configure the fingerprint reader to register your fingerprint and enable
access. 4. NFC/Contactless smart card reader (optional) 5. Touchpad
Move your finger on the touchpad to move the mouse pointer. Tap to left-click
and two fingers tap to right-click.
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Views of Latitude 5540
Front
1. Left microphone Provides digital sound input for audio recording and voice
calls.
2. Infrared emitter (optional) Emits infrared light, which enables the
infrared camera to sense and track motion.
3. Infrared camera (optional) Enhances security when paired with Windows
Hello face authentication.
4. Camera shutter Slide the privacy shutter to the left to access the camera
lens.
5. Camera Enables you to video chat, capture photos, and record videos.
6. Camera-status light Turns on when the camera is in use.
7. Ambient-light sensor The sensor detects the ambient light and
automatically adjusts the display brightness.
8. Right microphone Provides digital sound input for audio recording and
voice calls.
Views of Latitude 5540
11
Back
1. Nano-SIM card slot (optional) Insert a nano-SIM card to connect to a
mobile broadband network. NOTE: Availability of the nano-SIM card slot depends
on the region and configuration ordered.
Bottom
1. Speakers Provide audio output.
2. Service Tag label The Service Tag is a unique alphanumeric identifier that
enables Dell service technicians to identify the hardware components in your
computer and access warranty information.
3. Fan vents
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Views of Latitude 5540
Service Tag
The service tag is a unique alphanumeric identifier that allows Dell service
technicians to identify the hardware components in your computer and access
warranty information.
Battery charge and status light
The following table lists the battery charge and status light behavior of your Latitude 5540.
Table 1. Battery charge and status light behavior
Power Source AC Adapter
LED Behavior Off
AC Adapter
Solid White
Battery
Off
Battery
Solid Amber (590+/-3 nm)
System Power State S0 – S5 S0 – S5 S0 – S5 S0 – S5
Battery Charge Level Fully Charged < Fully Charged 11-100% < 10%
S0 (ON) – System is turned on. S4 (Hibernate) – The system consumes the least
power compared to all other sleep states. The system is almost at an OFF
state, expect for a trickle power. The context data is written to hard drive.
S5 (OFF) – The system is in a shutdown state.
Views of Latitude 5540
13
Set up your Latitude 5540
About this task NOTE: The images in this document may differ from your
computer depending on the configuration you ordered.
Steps 1. Connect the power adapter and press the power button.
NOTE: To conserve battery power, the battery might enter power saving mode.
Connect the power adapter and press the power button to turn on the computer.
2. Finish operating system setup. For Ubuntu: Follow the on-screen
instructions to complete the setup. For more information about installing and
configuring Ubuntu, search in the Knowledge Base Resource at
www.dell.com/support.
For Windows: Follow the on-screen instructions to complete the setup. When
setting up, Dell recommends that you: Connect to a network for Windows
updates.
NOTE: If connecting to a secured wireless network, enter the password for the
wireless network access when prompted. If connected to the internet, sign-in
with or create a Microsoft account. If not connected to the internet, create
an offline account.
On the Support and Protection screen, enter your contact details.
3. Locate and use Dell apps from the Windows Start menu–Recommended.
14
Set up your Latitude 5540
Table 2. Locate Dell apps
Resources
Description
Dell Product Registration Register your computer with Dell.
Dell Help & Support Access help and support for your computer.
SupportAssist SupportAssist is the smart technology that keeps your computer
running at its best by optimizing settings, detecting issues, removing viruses
and notifies when you need to make system updates. SupportAssist proactively
checks the health of your system’s hardware and software. When an issue is
detected, the necessary system state information is sent to Dell to begin
troubleshooting. SupportAssist is preinstalled on most of the Dell devices
running Windows operating system. For more information, see SupportAssist for
Home PCs User’s Guide on www.dell.com/serviceabilitytools.
NOTE: In SupportAssist, click the warranty expiry date to renew or upgrade
your warranty.
Dell Update Updates your computer with critical fixes and latest device
drivers as they become available. For more information on using Dell Update,
search in the Knowledge Base Resource at www.dell.com/ support.
Dell Digital Delivery Download software applications, which are purchased but
not preinstalled on your computer. For more information on using Dell Digital
Delivery, search in the Knowledge Base Resource at www.dell.com/support.
Set up your Latitude 5540
15
3
Specifications of Latitude 5540
Dimensions and weight
The following table lists the height, width, depth, and weight of your Latitude 5540.
Table 3. Dimensions and weight Description Height:
Front height
Values 20.80 mm (0.82 in.)
Rear height
22.80 mm (0.90 in.)
Width
357.80 mm (14.09 in.)
Depth
233.30 mm (9.19 in.)
Weight NOTE: The weight of your computer depends on the configuration ordered and manufacturing variability.
1.613 kg (3.56 lb)
Processor
The following table lists the details of the processors supported by your
Latitude 5540.
16
Specifications of Latitude 5540
Table 4. Processor
Description Option one
Processor type
13th Generation Intel Core i3-1315U
Option two
13th Generation Intel Core i5-1335U
Option three Option four Option five
Option six Option seven
Option eight
13th Generation Intel Core i5-1345U vPro
13th Generation Intel Core i5-1340P
13th Generation Intel Core i5-1350P vPro
13th Generation Intel Core i7-1355U
13th Generation Intel Core i7-1365U vPro
13th Generation Intel Core i7-1370P vPro
Processor wattage
15 W
Processor 6 total core count
Performance 2 -cores
Efficient-
4
cores
Processor 8 total thread counts
15 W 10
2 8 12
15 W 10
2 8 12
28 W 12
4 8 16
28 W 12
15 W 10
4
2
8
8
16
12
15 W 10
2 8 12
28 W 14
6 8 20
NOTE: Intel® Hyper-Threading Technology is only available on Performance- cores.
Processor speed
Up to 4.50 GHz
Up to 4.60 GHz
Performance-cores frequency
Processor 1.20 GHz base frequency
1.30 GHz
Maximum 4.50 GHz turbo frequency
4.60 GHz
Efficient-cores frequency
Processor 0.90 GHz base frequency
0.90 GHz
Maximum 3.30 GHz turbo frequency
3.40 GHz
Processor cache
10 MB
12 MB
Integrated graphics
Intel UHD Graphics
Intel Iris Xe Graphics
Up to 4.70 GHz
1.60 GHz
4.70 GHz
1.20 GHz
3.50 GHz
12 MB Intel Iris Xe Graphics
Up to 4.60 Up to 4.70 Up to 5
GHz
GHz
GHz
Up to 5.20 Up to 5.20
GHz
GHz
1.90 GHz
1.90 GHz 1.70 GHz 1.80 GHz 1.90 GHz
4.60 GHz 4.70 GHz 5 GHz
5.20 GHz 5.20 GHz
1.40 GHz
1.40 GHz 1.20 GHz 1.30 GHz 1.40 GHz
3.40 GHz 3.50 GHz 3.70 GHz 3.90 GHz 3.90 GHz
12 MB
12 MB
12 MB
12 MB
24 MB
Intel Iris Xe Intel Iris Xe Intel Iris Xe Intel Iris Xe Intel Iris Xe
Graphics
Graphics Graphics Graphics Graphics
Specifications of Latitude 5540
17
Chipset
The following table lists the details of the chipset supported by your Latitude 5540.
Table 5. Chipset Description Chipset
Values Integrated in the processor
Processor
13th Generation Intel Core i3/i5/i7
DRAM bus width
64-bit
Flash EPROM
32 MB for non-vPro, 32 MB + 16 MB for vPro
PCIe bus
Up to Gen 4
Operating system
Your Latitude 5540 supports the following operating systems:
Windows 11 Home, 64-bit Windows 11 Pro, 64-bit Windows 11 Pro downgrade (Win
10 Pro image FI + Win 11 Pro DPK) Ubuntu 22.04 LTS, 64-bit
Memory
The following table lists the memory specifications of your Latitude 5540.
Table 6. Memory specifications Description Memory slots
Values Two-SODIMM slots
Memory type
Memory speed Maximum memory configuration
Single-channel DDR4 Dual-channel DDR4 Single-channel DDR5 Dual-channel DDR5
3200 MHz 4800 MHz
64 GB
Minimum memory configuration
8 GB
Memory size per slot
8 GB, 16 GB, or 32 GB
Memory configurations supported
8 GB, 1 x 8 GB, DDR4, 3200 MHz, single-channel 16 GB, 2 x 8 GB, DDR4, 3200 MHz, dual-channel 16 GB, 1 x 16 GB, DDR4, 3200 MHz, single-channel 32 GB, 2 x 16 GB, DDR4, 3200 MHz, dual-channel 64 GB, 2 x 32 GB, DDR4, 3200 MHz, dual- channel 8 GB, 1 x 8 GB, DDR5, 4800 MHz, single-channel
18
Specifications of Latitude 5540
Table 6. Memory specifications (continued) Description
Values
16 GB, 2 x 8 GB, DDR5, 4800 MHz, dual-channel 16 GB, 1 x 16 GB, DDR5, 4800
MHz, single-channel 32 GB, 2 x 16 GB, DDR5, 4800 MHz, dual-channel 64 GB, 2 x
32 GB, DDR5, 4800 MHz, dual-channel
External ports
The following table lists the external ports of your Latitude 5540.
Table 7. External ports Description Network port
Values One RJ-45 port
USB ports
Two Thunderbolt 4 port Power Delivery and DisplayPort NOTE: You can connect a
Dell Docking Station to this port. For more information, search in the
Knowledge Base Resource at www.dell.com/support.
One USB 3.2 Gen 1 port with PowerShare One USB 3.2 Gen 1 port
Audio port
One Universal audio port
Video port
One HDMI 2.0 port
Media-card reader
One microSD-card slot
Power-adapter port
USB Type-C power input
Security-cable slot
One security-cable slot (wedge-shaped)
Internal slots
The following table lists the internal slots of your Latitude 5540.
Table 8. Internal slots Description M.2
Values
One M.2 2230 slot for WiFi and Bluetooth combo card One M.2 2230/2280 slot for
solid-state drive One M.2 2230 slot for solid-state drive One M.2 3042/3052
for WWAN card
NOTE: To learn more about the features of different types of M.2 cards, search
in the Knowledge Base Resource at www.dell.com/support.
Specifications of Latitude 5540
19
Ethernet
The following table lists the wired Ethernet Local Area Network (LAN) specifications of your Latitude 5540.
Table 9. Ethernet specifications Description Model number
Values Intel I219-V/Intel I219-LM
Transfer rate
10/100/1000 Mbps
Wireless module
The following table lists the Wireless Local Area Network (WLAN) modules supported on your Latitude 5540.
Table 10. Wireless module specifications
Description
Option one
Model number
Realtek RTL8852BE
Option two Intel AX211
Transfer rate
Up to 1201 Mbps
Up to 2400 Mbps
Frequency bands supported
2.4 GHz/5 GHz
2.4 GHz/5 GHz/6 GHz
Wireless standards
WiFi 802.11a/b/g Wi-Fi 4 (WiFi 802.11n) Wi-Fi 5 (WiFi 802.11ac) Wi-Fi 6 (WiFi 802.11ax)
WiFi 802.11a/b/g
Wi-Fi 4 (WiFi 802.11n)
Wi-Fi 5 (WiFi 802.11ac)
Wi-Fi 6E (WiFi 802.11ax) (Wi-Fi 6 where Wi-Fi 6E is unavailable)
Encryption
64-bit/128-bit WEP AES-CCMP TKIP
64-bit/128-bit WEP AES-CCMP TKIP
Bluetooth
Bluetooth 5.3
Bluetooth 5.3
WWAN module
The following table lists the Wireless Wide Area Network (WWAN) module supported on your Latitude 5540.
Table 11. WWAN module specifications
Description
Option one
Model number
DW5823, Intel XMM 7560 R Global LTEAdvanced, CAT16
Option two
DW5931e, Intel 5G 5000 Global Gigabit NR/LTE, 3GPP Release 15
Form factor
M.2 3042 Key-B
M.2 3042 Key-B
Host interface
PCIe Gen2
PCIe Gen3
Network standard
LTE FDD/TDD, WCDMA/HSPA+,GPS/ GLONASS/BDS/Galileo
NR FR1(Sub6) FDD/TDD, LTE FDD/ TDD, WCDMA/HSPA+, GPS/GLONASS/ Galileo/BDS/QZSS
Transfer data rate
Up to 1 Gbps DL (CAT16)
SA: DL 4.67 Gbps / UL 1.25 Gbps
20
Specifications of Latitude 5540
Table 11. WWAN module specifications (continued)
Description
Option one
Up 150 Mbps UL
Option two
NSA: DL 3.74 Gbps / UL 700 Mbps LTE: DL 1.6 Gbps (CAT19) / UL 150
Mbps UMTS: DL 384 kbps / UL 384 kbps DL
DC-HSPA+: 42 Mbps (CAT24) / UL 11.5 Mbps (CAT7)
Operating frequency bands
LTE(B1, B2, B3, B4, B5, B7, B8, B12, B13, B14, B17, B18, B19, B20, B25, B26,
NR(n1, n2, n3, n5, n7, n8, n20, n25, n28, n30, n38, n40, n41, n48, n66, n71,
B28, B29, B30, B32, B34, B38, B39,
n77, n78, n79)
B40, B41(HPUE), B42, B43, B46(receiver LTE (B1, B2, B3, B4, B5, B7, B8, B12,
only), B48, B66, B71
B13, B14, B17, B18, B19, B20, B25,
WCDMA/HSPA+(1, 2, 4, 5, 8)
B26, B28, B29, B30, B32, B34, B38, B39, B40, B41, B42, B43, B46, B48,
B66, B71*)
WCDMA/HSPA+ (1, 2, 4, 5, 8)
Power supply
DC 3.135 V to 4.40 V, typical 3.30 V
DC 3.135 V to 4.4 V, Typical 3.3 V
SIM card
Supported through external SIM slot
Supported through external SIM slot
eSIM with dual SIM (DSSA)
Supported (the availability of eSIM functionality embedded on the module is dependent on the region and specific carrier requirements)
Supported
Antenna diversity
Supported
Supported
Radio On/Off
Supported
Supported
Wake on wireless
Supported
Supported
Temperature
Normal operating temperature: -10°C to + 55°C
Extended Operating temperature: -20°C to +65°C
Normal operating temperature: -10°C to + 55°C
Extended Operating temperature: -30°C to +75°C
Storage temperature: -40°C to +85°C
Antenna connector
WWAN Main Antenna x 4 Supports 4×4 MIMO
WWAN Main Antenna x 4 Supports 4×4 MIMO
NOTE: For instructions on how to find your computer’s IMEI (International Mobile Station Equipment Identity) number, search in the Knowledge Base Resource at www.dell.com/support.
Audio
The following table lists the audio specifications of your Latitude 5540.
Table 12. Audio specifications Description Audio controller
Values Realtek Waves, MaxxAudio 12.0
Stereo conversion
Supported
Specifications of Latitude 5540
21
Table 12. Audio specifications (continued) Description Internal audio interface
External audio interface
Number of speakers
Internal-speaker amplifier
External volume controls
Speaker output:
Average speaker output
Peak speaker output
Subwoofer output
Microphone
Values High definition audio interface Universal Audio Jack/HDMI 2.0 port 2
Not supported Keyboard shortcut controls
2 W 2 W Not supported Digital-array microphones in camera assembly
Storage
This section lists the storage options on your Latitude 5540.
Your Latitude 5540 supports one of the following options One M.2 2230/2280
solid-state drive One M.2 2230 self-encrypting drive
Table 13. Storage specifications Storage type M.2 2230/2280 solid-state drive
Interface type PCIe Gen4 x4 NVMe, up to 64 Gbps
M.2 2230 self-encrypting drive
PCIe Gen4 x4 NVMe, up to 64 Gbps
Capacity Up to 2 TB Up to 256 GB
Media-card reader
The following table lists the media-card reader specifications of your Latitude 5540.
Table 14. Media-card reader (standard offering)
Media supported (Maximum capacity supported will vary by Flash Media Types)
Media Supported
Micro Secure Digital (mSD) Micro Secure Digital High Capacity (mSDHC) Micro Secure Digital Extended Capacity (mSDXC)
Support Specification Versions
microSD 4.0 card
22
Specifications of Latitude 5540
Keyboard
The following table lists the keyboard specifications of your Latitude 5540.
Table 15. Keyboard specifications Description Keyboard type
Keyboard layout
Values
Standard backlit keyboard Standard non-backlit keyboard
QWERTY
Number of keys Keyboard size
United States and Canada: 99 keys United Kingdom: 100 keys Japan: 103 keys
X= 18.05 mm key pitch Y= 18.05 mm key pitch
Keyboard shortcuts
Some keys on your keyboard have two symbols on them. These keys can be used to
type alternate characters or to perform secondary functions. To type the
alternate character, press Shift and the desired key. To perform secondary
functions, press Fn and the desired key.
NOTE: You can define the primary behavior of the
function keys (F1F12) changing Function Key Behavior
in BIOS setup program.
Keyboard function keys
The F1-F12 keys at the top of the keyboard are function keys. By default,
these keys are used to perform specific functions defined by the software
application in use.
You can run the secondary tasks that are indicated by the symbols on the
function keys by pressing the function key with fn, for example, fn and F1.
See the table below for the list of secondary tasks and the key combinations
to run them.
NOTE: Keyboard characters may differ depending on the keyboard language
configuration. Keys that are used for tasks remain the same, regardless of the
keyboard language.
NOTE: You can define the primary behavior of function keys in the Function Key
Behavior menu of the BIOS setup program.
Table 16. Secondary tasks of keyboard keys Key combination for task fn and F1 fn and F2 fn and F3 fn and F4 fn and F5 fn and F6 fn and F7 fn and F8 fn and F10
What the task does Mutes audio Decreases audio volume Increases audio volume Turn off/on the microphone Changes the brightness of the backlit keyboard Decreases display brightness Increases display brightness Switches to an external display Prints screen (Screen capture)
Specifications of Latitude 5540
23
Table 16. Secondary tasks of keyboard keys (continued)
Key combination for task fn and F11
What the task does Home (Moves cursor to beginning of the line)
fn and F12
End (Moves cursor to the end of the line)
fn and Esc
Locks the fn key on and off
fn and Ctrl
Opens the menu of the software application
Keys with alternate characters
There are other keys on your keyboard with alternate characters. The symbols
that are shown at the bottom of these keys are the main characters that are
displayed when the key is pressed; the symbols that are shown at the top of
these keys are displayed when the key is pressed with the shift key. For
example, if you press 2, 2 is displayed; if you press Shift and 2, @ is
displayed.
Camera
The following table lists the camera specifications of your Latitude 5540.
Table 17. Camera specifications Description Number of cameras
Values One
Camera type
FHD RGB camera
FHD RGB + IR camera
FHD RGB+IR camera with Ambient Light Sensor, Express Sign-In with Presence
Detection and Intelligent Privacy
Camera location
Front camera
Camera sensor type
CMOS sensor technology
Camera resolution: Still image
2.07 megapixel
Video
1920 x 1080 (FHD) at 30 fps
Infrared camera resolution: Still image
0.23 megapixels
Video
640 x 360 at 30 fps
Diagonal viewing angle: Camera
80 degrees
Infrared camera
86.6 degrees
24
Specifications of Latitude 5540
Touchpad
The following table lists the touchpad specifications of your Latitude 5540.
Table 18. Touchpad specifications Description Touchpad resolution:
Values >300 DPI
Touchpad dimensions: Horizontal
115 mm (4.52 in.)
Vertical
67 mm (2.64 in.)
Touchpad gestures
For more information about touchpad gestures available on:
Windows, see the Microsoft knowledge base article at support.microsoft.com
Ubuntu, see ubuntu.com/support
Power adapter
The following table lists the power adapter specifications of your Latitude 5540.
Table 19. Power adapter specifications
Description
Option one
Option two
Type
60 W AC adapter, USB-C
65 W AC adapter
60 W AC adapter, USB-C, 2-pin
Power-adapter dimensions:
Height
22 mm (0.86 in.)
28 mm (1.10 in.)
Width
55 mm (2.16 in.)
112 mm (4.41 in.)
Depth
66 mm (2.59 in.)
26.50 (1.04 in.)
Input voltage
100 VAC200 VAC
100 VAC200 VAC
Input frequency
50 Hz60 Hz
50 Hz60 Hz
Input current (maximum)
Output current (continuous)
1.70 A
20 V/3 A (Continuous) 15 V/3 A (Continuous) 9 V/3 A (Continuous) 5 V/3 A
(Continuous)
1.70 A
20 V/3.25 A (Continuous) 15 V/3 A (Continuous) 9 V/3 A (Continuous) 5 V/3 A
(Continuous)
Rated output voltage 20 VDC/15 VDC/9 VDC/5 VDC
20 VDC/15 VDC/9 VDC/5 VDC
Temperature range:
Option three 100 W AC adapter, USBC
122 mm (4.80 in.)
60 mm (2.36 in.)
26.50 (1.04 in.)
100 VAC200 VAC
50 Hz60 Hz
1.70 A
20 V/5 A (Continuous)
15 V/3 A (Continuous)
9 V/3 A (Continuous)
5 V/3 A (Continuous)
20 VDC/15 VDC/9 VDC/5 VDC
Specifications of Latitude 5540
25
Table 19. Power adapter specifications (continued)
Description Operating
Option one 0°C to 40°C (32°F to 104°F)
Option two 0°C to 40°C (32°F to 104°F)
Storage
-20°C to 70°C (-4°F to 158°F)
-40°C to 70°C (-40°F to 158°F)
Option three
0°C to 40°C (32°F to 104°F)
-40°C to 70°C (-40°F to 158°F)
CAUTION: Operating and storage temperature ranges may differ among components, so operating or storing the device outside these ranges may impact the performance of specific components.
Battery
The following table lists the battery specifications of your Latitude 5540.
Table 20. Battery specifications
Description
Option one
Battery type
3 cell, 42 WHr, lithiumion, ExpressCharge + ExpressCharge Boost
Option two
Option three
Option four
3 cell, 42 WHr, lithium-ion, Long Cycle Life
3 cell, 54
3 cell, 54 WHr,
WHr, lithium-ion,
lithium-ion, Long
ExpressCharge +
Cycle Life +
ExpressCharge Boost ExpressCharge
Battery voltage
11.40 VDC
11.40 VDC
11.40 VDC
11.40 VDC
Battery weight (minimum)
Battery dimensions:
Height
0.19 kg (0.41 lb) 5.73 mm (0.22 in.)
0.19 kg (0.41 lb) 5.73 mm (0.22 in.)
0.22 kg (0.48 lb)
0.22 kg (0.48 lb)
5.73 mm (0.22 in.) 5.73 mm (0.22 in.)
Width
263 mm (10.35 in.)
263 mm (10.35 in.)
263 mm (10.35 in.) 263 mm (10.35 in.)
Depth
68.90 mm (2.71 in.)
68.90 mm (2.71 in.)
68.90 mm (2.71 in.) 68.90 mm (2.71 in.)
Temperature range:
Operatin g
Charge: 0°C to 45°C (32°F to 113°F)
Discharge: 0°C to 70°C (32°F to 158°F)
Charge: 0°C to 45°C Charge: 0°C to Charge: 0°C to
(32°F to 113°F)
45°C (32°F to
45°C (32°F to
Discharge: 0°C to
113°F)
113°F)
70°C (32°F to 158°F) Discharge: 0°C Discharge: 0°C
to 70°C (32°F to
to 70°C (32°F to
158°F)
158°F)
Storage -20°C to 65°C (4°F to -20°C to 65°C (4°F to
149°F)
149°F)
-20°C to 65°C (4°F -20°C to 65°C (4°F
to 149°F)
to 149°F)
Battery operating time
Battery charging time (approximate)
NOTE: Control the charging time, duration, start and
Varies depending on operating conditions and can significantly reduce under certain power-intensive conditions.
Varies depending on operating conditions and can significantly reduce under certain powerintensive conditions.
From 0% up to 35% in 20 minutes
(ExpressCharge
Boost)
80% in 1 hour
2 hours to full
3 hours to full (Standard charge)
Varies depending on operating conditions and can significantly reduce under certain powerintensive conditions.
Varies depending on operating conditions and can significantly reduce under certain powerintensive conditions.
From 0% up to 35% in
20 minutes
80% in 1 hour
2 hours to full
3 hours to full (Standard charge)
26
Specifications of Latitude 5540
Table 20. Battery specifications (continued)
Description
Option one
Option two
end time, and so on using the Dell Power Manager application. For more information on the Dell Power Manager see, Me and My Dell on www.dell.com.
80% in 1 hour
2 hours to full
3 hours to full (Standard charge)
Coin-cell battery
CR2032
CR2032
Option three
(ExpressCharge Boost) 80% in 1 hour 2 hours to full 3 hours to full (Standard
charge)
Option four
CR2032
CR2032
CAUTION: Operating and storage temperature ranges may differ among components,
so operating or storing the device outside these ranges may impact the
performance of specific components.
CAUTION: Dell recommends that you charge the battery regularly for optimal
power consumption. If your battery charge is completely depleted, connect the
power adapter, turn on your computer, and then restart your computer to reduce
the power consumption.
Display
The following table lists the display specifications of your Latitude 5540.
Table 21. Display specifications
Description Display type
Option one
15-inch Full High Definition (FHD)
Option two
15-inch Full High Definition (FHD)
Touch options Display-panel technology Display-panel dimensions (active area):
Height Width Diagonal Display-panel native resolution Luminance (typical)
Megapixels Color gamut Pixels Per Inch (PPI) Contrast ratio (typical)
No In-Plane Switching (IPS)
193.60 mm (7.62 in.) 344.20 mm (13.55 in.) 396 mm (15.60 in.) 1920 x 1080 250
nits 262,144 colors 45% NTSC 141 700:1
Yes In-Plane Switching (IPS)
193.60 mm (7.62 in.) 344.20 mm (13.55 in.) 396 mm (15.60 in.) 1920 x 1080 250
nits 262,144 colors 45% NTSC 141 700:1
Option three 15-inch Full High Definition (FHD), ComfortView Plus Low Blue
Light, Battery Saving No In-Plane Switching (IPS)
193.60 mm (7.62 in.) 344.20 mm (13.55 in.) 396 mm (15.60 in.) 1920 x 1080
400 nits 16,777,216 colors 100% sRGB 141 800:1
Specifications of Latitude 5540
27
Table 21. Display specifications (continued)
Description Response time (max)
Option one 35 ms
Refresh rate
60 Hz
Horizontal view angle
80 +/- degrees
Vertical view angle
80 +/- degrees
Pixel pitch
0.179 x 0.179 mm
Power consumption (maximum)
Anti-glare vs glossy finish
4.60 W Anti-glare
Option two 35 ms 60 Hz 80 +/- degrees 80 +/- degrees 0.179 x 0.179 mm 4.60 W
Anti-glare
Option three 35 ms 60 Hz 80 +/- degrees 80 +/- degrees 0.179 x 0.179 mm 4.50 W
Anti-glare
Fingerprint reader (optional)
The following table lists the specifications of the optional fingerprint- reader of your Latitude 5540.
Table 22. Fingerprint reader specifications Description Fingerprint-reader sensor technology
Values Capacitive
Fingerprint-reader sensor resolution
500 dpi
Fingerprint-reader sensor pixel size
108 mm x 88 mm
Sensor
The following table lists the sensor of your Latitude 5540. Table 23. Sensor
Sensor support Ambient Light Sensor Accelerometer in the base: ST Micro
LIS2DW12TR Accelerometer in the hinge-up (Upsell config with Emza/ALS/IR
camera): ST Micro LNG2DMTR
GPU–Integrated
The following table lists the specifications of the integrated Graphics Processing Unit (GPU) supported by your Latitude 5540.
Table 24. GPU–Integrated
Controller
External display support
Intel UHD Graphics
One HDMI 2.0 port
Memory size single-channel memory
Processor 13th Generation Intel Core i3
Intel Iris Xe Graphics
One HDMI 2.0 port
dual-channel memory
13th Generation Intel Core i5/17
28
Specifications of Latitude 5540
GPU–Discrete
The following table lists the specifications of the discrete Graphics Processing Unit (GPU) supported by your Latitude 5540.
Table 25. GPU–Discrete Controller NVIDIA GeForce MX550
Memory size 2 GB
Memory type GDDR6
External display support
The following table lists the external display support for your Latitude 5540.
Table 26. External display support
Graphics card
Supported external displays with laptop display enabled
Intel Iris Xe Graphics
3
Supported external displays with laptop display disabled
4
Intel UHD Graphics
3
4
NOTE: For more information about external display support, see the External Display Connection Guide on www.dell.com/ support.
Hardware security
The following table lists the hardware security of your Latitude 5540.
Table 27. Hardware security Hardware security Trusted Platform Module (TPM)
2.0 discrete FIPS 140-2 certification for TPM TCG Certificatication for TPM
(Trusted Computing Group) Finger Print Reader in Power Button tied to
ControlVault 3 ControlVault 3 Advanced Authentication with FIPS 140-2 Level 3
Certification Contacted Smart Card and ControlVault 3 Contactless Smart Card,
NFC, and ControlVault 3 SED SSD NVMe, SSD and HDD (Opal and non-Opal) per SDL
FIPS 201 Full Scan FPR and ControlVault 3
Specifications of Latitude 5540
29
Smart-card reader
Contactless smart-card reader
This section lists the contactless smart-card reader specifications of your Latitude 5540.
Table 28. Contactless smart-card reader specifications
Title Felica Card Support
Description
Reader and software capable of supporting Felica contactless cards
Dell ControlVault 3 contactless smart-card reader with NFC
Yes
ISO 14443 Type A Card Support
Reader and software capable of
Yes
supporting ISO 14443 Type A contactless
cards
ISO 14443 Type B Card Support
Reader and software capable of
Yes
supporting ISO 14443 Type B contactless
cards
ISO/IEC 21481
Reader and software capable of
Yes
supporting ISO/IEC 21481 compliant
contactless cards and tokens
ISO/IEC 18092
Reader and software capable of
Yes
supporting ISO/IEC 21481 compliant
contactless cards and tokens
ISO 15693 Card Support
Reader and software capable of
Yes
supporting ISO15693 contactless cards
NFC Tag Support
Supports reading and processing of NFC Yes compliant tag information
NFC Reader Mode
Support for NFC Forum Defined Reader Yes mode
NFC Writer Mode
Support for NFC Forum Defined Writer Yes mode
NFC Peer-to-Peer Mode
Support for NFC Forum Defined Peer to Yes Peer mode
NFC Proximity OS Interface
Enumerates NFP (Near Field Proximity) Yes device for OS to utilize
PC/SC OS interface
Personal Computer/Smart Card
Yes
specification for integration of hardware
readers into personal computer
environments
CCID driver compliance
Common driver support for Integrated Yes Circuit Card Interface Device for OS level drivers
Dell ControlVault support
Device connects to Dell ControlVault for Yes usage and processing
NOTE: 125 Khz proximity cards are not supported.
Table 29. Supported cards Manufacturer HID
Card jCOP readertest3 A card (14443a)
30
Specifications of Latitude 5540
Table 29. Supported cards (continued) Manufacturer
NXP/Mifare G&D
Oberthur
Card 1430 1L DESFire D8H iClass (Legacy) iClass SEOS Mifare DESFire 8K White PVC Cards Mifare Classic 1K White PVC Cards NXP Mifare Classic S50 ISO Card idOnDemand – SCE3.2 144K SCE6.0 FIPS 80K Dual+ 1 K Mifare SCE6.0 nonFIPS 80K Dual+ 1 K Mifare SCE6.0 FIPS 144K Dual + 1K Mifare SCE6.0 nonFIPS 144K Dual + 1 K Mifare SCE7.0 FIPS 144K idOnDemand – OCS5.2 80K ID-One Cosmo 64 RSA D V5.4 T=0 card
Contacted smart-card reader
The following table lists the contacted smart-card reader specifications of your Latitude 5540.
Table 30. Contacted smart-card reader specifications
Title
Description
Dell ControlVault 3 smart-card reader
ISO 7816 -3 Class A Card Support
Reader capable of reading 5V powered Yes smart mcard
ISO 7816 -3 Class B Card Support
Reader capable of reading 3V powered Yes smart card
ISO 7816 -3 Class C Card support
Reader capable of reading 1.8V powered Yes smart card
ISO 7816-1 Compliant
Specification for the reader
Yes
ISO 7816 -2 Compliant
Specification for smart card device
Not applicable
physical characteristics (size, location of
connection points, etc.)
T=0 support
Cards support character level
Yes
transmission
T=1 support
Cards support block level transmission Yes
EMVCo Compliant
Compliant with EMVCo (for electronic Yes payment standards) smart card standards as posted to www.emvco.com
EMVCo Certified
Formally certified based on EMVCO
Yes
smart card standards
PC/SC OS interface
Personal Computer/Smart Card
Yes
specification for integration of hardware
Specifications of Latitude 5540
31
Table 30. Contacted smart-card reader specifications (continued)
Title
Description
CCID driver compliance
Windows Certified FIPS 201 (PIV/HSPD-12) Compliant via GSA
readers into personal computer environments
Common driver support for Integrated Circuit Card Interface Device for OS
level drivers.
Device certified by WHCK
Device compliant with FIPS 201/PIV/ HSPD-12 requirements
Dell ControlVault 3 smart-card reader
Yes
Yes Yes
Operating and storage environment
This table lists the operating and storage specifications of your Latitude 5540. Airborne contaminant level: G1 as defined by ISA-S71.04-1985
Table 31. Computer environment Description Temperature range
Operating 0°C to 35°C (32°F to 95°F)
Relative humidity (maximum) Vibration (maximum)*
10% to 90% (non-condensing) 0.66 GRMS
Shock (maximum)
110 G
Altitude range
-15.2 m to 3048 m (-49.87 ft to 10000 ft)
Storage -40°C to 65°C (-40°F to 149°F) 0% to 95% (non-condensing) 1.30 GRMS 160 G -15.2 m to 10668 m (-49.87 ft to 35000 ft)
CAUTION: Operating and storage temperature ranges may differ among components, so operating or storing the device outside these ranges may impact the performance of specific components.
- Measured using a random vibration spectrum that simulates user environment. Measured using a 2 ms half-sine pulse.
Dell Support policy
For information on Dell support policy, search in the Knowledge Base Resource
at www.dell.com/support.
ComfortView Plus
WARNING: Prolonged exposure to blue light from the display may lead to long-
term effects such as eye strain, eye fatigue, or damage to the eyes. Blue
light is a color in the light spectrum which has a short wavelength and high
energy. Chronic exposure to blue light, particularly from digital sources, may
disrupt sleep patterns and cause long-term effects such as eye strain, eye
fatigue, or damage to the eyes. The display on this computer is designed to
minimize blue light and complies with TÜV Rheinland’s requirement for low blue
light displays. Low blue light mode is enabled at the factory, so no further
configuration is necessary.
32
Specifications of Latitude 5540
To reduce the risk of eye strain, it is also recommended that you: Position
the display at a comfortable viewing distance between 20 and 28 inches (50 and
70 cm) from your eyes. Blink frequently to moisten your eyes, wet your eyes
with water, or apply suitable eye drops. Look away from your display, and gaze
at a distant object at 20 ft (609.60 cm) away for at least 20 seconds during
each
break. Take an extended break for 20 minutes every two hours.
Using the privacy shutter
1. Slide the privacy shutter to the left to access the camera lens. 2. Slide
the privacy shutter to the right to cover the camera lens.
Figure 1. Camera shutter
Dell Optimizer
This section provides the Dell Optimizer specifications of your Latitude 5540.
On Latitude 5540 with Dell Optimizer, the following features are supported:
ExpressConnect–Automatically joins the access point with the strongest signal,
and directs bandwidth to conferencing
applications when in use. ExpressSign-in–The Intel Context Sensing
Technology’s proximity sensor detects your presence to instantly wake up the
computer and login using the IR camera and Windows Hello feature. Windows
locks when you walk away. ExpressResponse–Prioritizes the most important
applications. Applications open faster and perform better.
ExpressCharge–Extends the battery runtime and improves battery performance by
adapting to your patterns.
Specifications of Latitude 5540
33
Intelligent Audio–Collaborate like you’re in the same room. Intelligent Audio
enhances your audio quality and reduces background noises, so you can hear and
be heard, creating a better conference experience for all.
For more information about configuring and using these features, see Dell
Optimizer User Guide.
34
Specifications of Latitude 5540
Working inside your computer
Safety instructions
Use the following safety guidelines to protect your computer from potential
damage and to ensure your personal safety. Unless otherwise noted, each
procedure included in this document assumes that you have read the safety
information that shipped with your computer.
WARNING: Before working inside your computer, read the safety information that
is shipped with your computer. For more safety best practices, see the
Regulatory Compliance home page at www.dell.com/ regulatory_compliance.
WARNING: Disconnect your computer from all power sources before opening the
computer cover or panels. After you finish working inside the computer,
replace all covers, panels, and screws before connecting your computer to an
electrical outlet.
CAUTION: To avoid damaging the computer, ensure that the work surface is flat,
dry, and clean.
CAUTION: To avoid damaging the components and cards, handle them by their
edges, and avoid touching the pins and the contacts. CAUTION: You should only
perform troubleshooting and repairs as authorized or directed by the Dell
technical assistance team. Damage due to servicing that is not authorized by
Dell is not covered by your warranty. See the safety instructions that is
shipped with the product or at www.dell.com/regulatory_compliance. CAUTION:
Before touching anything inside your computer, ground yourself by touching an
unpainted metal surface, such as the metal at the back of the computer. While
you work, periodically touch an unpainted metal surface to dissipate static
electricity which could harm internal components. CAUTION: When you disconnect
a cable, pull it by its connector or its pull tab, not the cable itself. Some
cables have connectors with locking tabs or thumbscrews that you must
disengage before disconnecting the cable. When disconnecting cables, keep them
evenly aligned to avoid bending the connector pins. When connecting cables,
ensure that the ports and the connectors are correctly oriented and aligned.
CAUTION: Press and eject any installed card from the media-card reader.
CAUTION: Exercise caution when handling Lithium-ion batteries in laptops.
Swollen batteries should not be used and should be replaced and disposed
properly.
NOTE: The color of your computer and certain components may appear differently
than shown in this document.
Before working inside your computer
Steps 1. Save and close all open files and exit all open applications. 2. Shut
down your computer. For Windows operating system, click Start > Power > Shut
down.
NOTE: If you are using a different operating system, see the documentation of
your operating system for shut-down instructions.
3. Disconnect your computer and all attached devices from their electrical
outlets. 4. Disconnect all attached network devices and peripherals, such as
keyboard, mouse, and monitor from your computer.
Working inside your computer
35
5. Remove any media card and optical disk from your computer, if applicable.
6. Enter the service mode, if you are able to power on your computer.
Service Mode Service Mode is used to cut-off power, without disconnecting
battery cable from system board prior conducting repairs in the computer.
CAUTION: If you are unable to turn on the computer to put it into Service
Mode, or the computer does not support Service Mode, proceed to disconnect the
battery cable. To disconnect the battery cable, follow the steps in Removing
the battery.
NOTE: Ensure that your computer is shut down and the AC adapter is
disconnected.
a. Hold key on the keyboard and press the power button for 3 seconds or
until the Dell logo appears on the screen. b. Press any key to continue. c. If
the AC adapter is not disconnected, a message prompting you to remove the AC
adapter appears on the screen.
Remove the AC adapter and then press any key to continue the Service Mode
process. The Service Mode process automatically skips the following step if
the Owner Tag of the computer is not set up in advance by the user. d. When
the ready-to-proceed message appears on the screen, press any key to proceed.
The computer emits three short beeps and shuts down immediately. e. Once the
computer shuts down, it has successfully entered Service Mode. NOTE: If you
are unable to power on your computer or unable to enter Service Mode, skip
this process.
Safety precautions
The safety precautions chapter details the primary steps to be taken before
performing any disassembly instructions. Observe the following safety
precautions before you perform any installation or break/fix procedures
involving disassembly or reassembly: Turn off the system and all attached
peripherals. Disconnect the system and all attached peripherals from AC power.
Disconnect all network cables, telephone, and telecommunications lines from
the system. Use an ESD field service kit when working inside any to avoid
electrostatic discharge (ESD) damage. After removing any system component,
carefully place the removed component on an anti-static mat. Wear shoes with
non-conductive rubber soles to reduce the chance of getting electrocuted.
Standby power
Dell products with standby power must be unplugged before you open the case.
Systems that incorporate standby power are essentially powered while turned
off. The internal power enables the system to be remotely turned on (wake on
LAN) and suspended into a sleep mode and has other advanced power management
features. Unplugging, pressing, and holding the power button for 15 seconds
should discharge residual power in the system board.
Bonding
Bonding is a method for connecting two or more grounding conductors to the
same electrical potential. This is done through the use of a field service
electrostatic discharge (ESD) kit. When connecting a bonding wire, ensure that
it is connected to bare metal and never to a painted or non-metal surface. The
wrist strap should be secure and in full contact with your skin, and ensure
that you remove all jewelry such as watches, bracelets, or rings prior to
bonding yourself and the equipment.
Electrostatic discharge–ESD protection
ESD is a major concern when you handle electronic components, especially
sensitive components such as expansion cards, processors, memory DIMMs, and
system boards. Very slight charges can damage circuits in ways that may not be
obvious, such as intermittent problems or a shortened product life span. As
the industry pushes for lower power requirements and increased density, ESD
protection is an increasing concern.
36
Working inside your computer
Due to the increased density of semiconductors used in recent Dell products,
the sensitivity to static damage is now higher than in previous Dell products.
For this reason, some previously approved methods of handling parts are no
longer applicable.
Two recognized types of ESD damage are catastrophic and intermittent failures.
Catastrophic Catastrophic failures represent approximately 20 percent of
ESD-related failures. The damage causes
an immediate and complete loss of device functionality. An example of
catastrophic failure is a memory DIMM that has received a static shock and
immediately generates a “No POST/No Video” symptom with a beep code emitted
for missing or nonfunctional memory. Intermittent Intermittent failures
represent approximately 80 percent of ESD-related failures. The high rate of
intermittent failures means that most of the time when damage occurs, it is
not immediately recognizable. The DIMM receives a static shock, but the
tracing is merely weakened and does not immediately produce outward symptoms
related to the damage. The weakened trace may take weeks or months to melt,
and in the meantime may cause degradation of memory integrity, intermittent
memory errors, etc.
The more difficult type of damage to recognize and troubleshoot is the
intermittent (also called latent or “walking wounded”) failure.
Perform the following steps to prevent ESD damage: Use a wired ESD wrist strap
that is properly grounded. The use of wireless anti-static straps is no longer
allowed; they do not
provide adequate protection. Touching the chassis before handling parts does
not ensure adequate ESD protection on parts with increased sensitivity to ESD
damage. Handle all static-sensitive components in a static-safe area. If
possible, use anti-static floor pads and workbench pads. When unpacking a
static-sensitive component from its shipping carton, do not remove the
component from the anti-static packing material until you are ready to install
the component. Before unwrapping the anti-static packaging, ensure that you
discharge static electricity from your body. Before transporting a static-
sensitive component, place it in an anti-static container or packaging.
ESD field service kit
The unmonitored Field Service kit is the most commonly used service kit. Each
Field Service kit includes three main components: anti-static mat, wrist
strap, and bonding wire.
Components of an ESD field service kit
The components of an ESD field service kit are: Anti-Static Mat The anti-
static mat is dissipative and parts can be placed on it during service
procedures. When using an
anti-static mat, your wrist strap should be snug and the bonding wire should
be connected to the mat and to any bare metal on the system being worked on.
Once deployed properly, service parts can be removed from the ESD bag and
placed directly on the mat. ESD-sensitive items are safe in your hand, on the
ESD mat, in the system, or inside a bag. Wrist Strap and Bonding Wire The
wrist strap and bonding wire can be either directly connected between your
wrist and bare metal on the hardware if the ESD mat is not required, or
connected to the anti-static mat to protect hardware that is temporarily
placed on the mat. The physical connection of the wrist strap and bonding wire
between your skin, the ESD mat, and the hardware is known as bonding. Use only
Field Service kits with a wrist strap, mat, and bonding wire. Never use
wireless wrist straps. Always be aware that the internal wires of a wrist
strap are prone to damage from normal wear and tear, and must be checked
regularly with a wrist strap tester in order to avoid accidental ESD hardware
damage. It is recommended to test the wrist strap and bonding wire at least
once per week. ESD Wrist Strap Tester The wires inside of an ESD strap are
prone to damage over time. When using an unmonitored kit, it is a best
practice to regularly test the strap prior to each service call, and at a
minimum, test once per week. A wrist strap tester is the best method for doing
this test. If you do not have your own wrist strap tester, check with your
regional office to find out if they have one. To perform the test, plug the
wrist-strap’s bonding-wire into the tester while it is strapped to your wrist
and push the button to test. A green LED is lit if the test is successful; a
red LED is lit and an alarm sounds if the test fails. Insulator Elements It
is critical to keep ESD sensitive devices, such as plastic heat sink casings,
away from internal parts that are insulators and often highly charged. Working
Environment Before deploying the ESD Field Service kit, assess the situation
at the customer location. For example, deploying the kit for a server
environment is different than for a desktop or portable environment. Servers
are typically installed in a rack within a data center; desktops or portables
are typically placed on office desks or cubicles. Always look for a large open
flat work area that is free of clutter and large enough to deploy the ESD kit
with additional space to accommodate the type of system that is being
repaired. The workspace should also be free of insulators that can cause an
ESD event. On the work area, insulators such as Styrofoam and other plastics
should always be moved at least 12 inches or 30 centimeters away from
sensitive parts before physically handling any hardware components
Working inside your computer
37
ESD Packaging All ESD-sensitive devices must be shipped and received in
static-safe packaging. Metal, static-shielded bags are preferred. However, you
should always return the damaged part using the same ESD bag and packaging
that the new part arrived in. The ESD bag should be folded over and taped shut
and all the same foam packing material should be used in the original box that
the new part arrived in. ESD-sensitive devices should be removed from
packaging only at an ESD-protected work surface, and parts should never be
placed on top of the ESD bag because only the inside of the bag is shielded.
Always place parts in your hand, on the ESD mat, in the system, or inside an
anti-static bag.
Transporting Sensitive Components When transporting ESD sensitive components
such as replacement parts or parts to be returned to Dell, it is critical to
place these parts in anti-static bags for safe transport.
ESD protection summary
It is recommended to use the traditional wired ESD grounding wrist strap and
protective anti-static mat at all times when servicing Dell products. In
addition, it is critical to keep sensitive parts separate from all insulator
parts while performing service and that they use anti-static bags for
transporting sensitive components.
Transporting sensitive components
When transporting ESD sensitive components such as replacement parts or parts
to be returned to Dell, it is critical to place these parts in anti-static
bags for safe transport.
After working inside your computer
About this task
NOTE: Leaving stray or loose screws inside your computer may severely damage
your computer.
Steps 1. Replace all screws and ensure that no stray screws remain inside your
computer. 2. Connect any external devices, peripherals, or cables you removed
before working on your computer. 3. Replace any media cards, discs, or any
other parts that you removed before working on your computer. 4. Connect your
computer and all attached devices to their electrical outlets. 5. Turn on your
computer.
BitLocker
CAUTION: If BitLocker is not suspended before updating the BIOS, the next time
you reboot the system it will not recognize the BitLocker key. You will then
be prompted to enter the recovery key to progress, and the system will ask for
this on each reboot. If the recovery key is not known this can result in data
loss or an unnecessary operating system reinstall. For more information about
this subject, see Knowledge Article: updating the BIOS on Dell systems with
BitLocker enabled. The installation of the following components triggers
BitLocker: Hard disk drive or solid state drive System board
Recommended tools
The procedures in this document may require the following tools: Phillips
screwdriver #0/#1 Plastic scribe
38
Working inside your computer
Screw list
NOTE: When removing screws from a component, it is recommended to note the
screw type, the quantity of screws, and then place them in a screw storage
box. This is to ensure that the correct number of screws and correct screw
type is restored when the component is replaced.
NOTE: Some computers have magnetic surfaces. Ensure that the screws are not
left attached to such surfaces when replacing a component.
NOTE: Screw color may vary with the configuration ordered.
Table 32. Screw list Component 5G WWAN bracket
Screw type M2x3
Quantity 1
Screw image
5G WWAN thermal shield
M2x3
2
M.2 2230 Solid-state drive in M2x3
1
Slot 1 and Slot 2
Solid-state drive thermal shield M2x3
2
in Slot 1
Assembly-inner frame
M2x3
12
System fan
M2x4
2
Heat sink
M2x4
1
Display cable
M2x3
2
Type-C bracket
M2x4
3
System board
M2x3
3
Power button
M2x2.5
2
Keyboard
M2x2
21
Display assembly
M2x3
2
Display panel
M2.5×3.5
4
Display hinges
M2.5×3.5
2
Fingerprint-reader bracket
M2x3
1
Working inside your computer
39
Table 32. Screw list (continued)
Component
Screw type
Smart-card reader
M2x2
Quantity 2
Screw image
Major components of Latitude 5540
The following image shows the major components of Latitude 5540.
40
Working inside your computer
Working inside your computer
41
1. Base cover 3. Heat sink 5. Speakers
7. Smart card reader (optional) 9. Right hinges 11. Camera module 13. Display
panel 15. Display back cover 17. Left hinges 19. Keyboard 21. Power button 23.
Fingerprint reader 25. 4G WWAN card 27. WLAN card
2. Battery 4. System fan 6. M.2 2230/2280 solid-state drive thermal shield
for solid-
state drive Slot 1 8. System board 10. Touchpad 12. Display bezel 14. Display
cable 16. Sensor board with cable 18. Palm-rest assembly 20. Coin-cell battery
22. Assembly inner frame 24. Memory module 26. 4G WWAN card bracket
NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options.
42
Working inside your computer
5
Removing and installing Customer Replaceable Units
The replaceable components in this chapter are Customer Replaceable Units
(CRUs). CAUTION: Customers can replace only the Customer Replaceable Units
(CRUs) following the safety precautions and replacement procedures. NOTE: The
images in this document may differ from your computer depending on the
configuration you ordered.
SIM card tray (Optional)
Removing the SIM card tray (Optional)
Prerequisites 1. Follow the procedure in Before working inside your computer.
NOTE: The procedure for SIM card tray removal is only applicable for computers
that are shipped with a WWAN module. CAUTION: Removing the SIM card when the
computer is turned on might cause data loss or damage to the card. Ensure that
your computer is turned off or the network connections are disabled.
Removing and installing Customer Replaceable Units (CRUs)
43
About this task
Steps 1. Insert a pin into the release hole to release the SIM card tray. 2.
Push the pin to disengage the lock, and eject the SIM card tray. 3. Slide the
SIM card tray out of the slot on the computer. 4. Remove the SIM card from the
SIM card tray. 5. Slide and push the SIM card tray back into the slot.
Installing the SIM card tray (Optional)
Prerequisites NOTE: The procedure for SIM card tray installation is only
applicable for computers that are shipped with a WWAN module.
If you are replacing a component, remove the existing component before
performing the installation procedure.
44
Removing and installing Customer Replaceable Units (CRUs)
About this task
Steps 1. Insert a pin into the release hole to release the SIM card tray. 2.
Push the pin to disengage the lock, and eject the SIM card tray. 3. Slide the
SIM card tray out of the slot on the computer. 4. Align and place the SIM card
in the dedicated slot on the SIM card tray, with the metallic contact of the
SIM card facing up. 5. Align the SIM card tray with the slot on the computer
and carefully slide it in. 6. Slide the SIM card tray into the slot, until it
clicks into place.
Next steps 1. Follow the procedure in After working inside your computer.
Base cover
Removing the base cover
Prerequisites 1. Follow the procedure in Before working inside your computer.
NOTE: Ensure that your computer is in Service Mode. For more information, see
Before working inside your computer.
Removing and installing Customer Replaceable Units (CRUs)
45
CAUTION: If you are unable to turn on the computer, if your computer is unable
to enter Service Mode, or the computer does not support Service Mode, proceed
to disconnect the battery cable. 2. Remove the SIM card.
About this task NOTE: Before removing the base cover, ensure that there is no
SD card installed in the SD card slot on your computer.
The following images indicate the location of the base cover and provide a
visual representation of the removal procedure.
46
Removing and installing Customer Replaceable Units (CRUs)
Steps 1. Loosen the eight captive screws that secure the base cover to the
palm-rest assembly. 2. Using a plastic scribe, pry open the base cover from
the recesses located in the U-shaped indents at the top edge of the
base cover near the hinges. 3. Lift the base cover off the keyboard and palm-
rest assembly.
NOTE: Ensure that your computer is in Service Mode. If your computer is unable
to enter Service Mode, disconnect the battery cable from the system board. To
disconnect the battery cable, follow step 4 and 5.
4. Disconnect the battery cable from the system board. 5. Press and hold the
power button for five seconds to ground the computer and drain the flea power.
Installing the base cover
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
Removing and installing Customer Replaceable Units (CRUs)
47
About this task The following images indicate the location of the base cover and provide a visual representation of the installation procedure.
48
Removing and installing Customer Replaceable Units (CRUs)
NOTE: If battery is not a pre-requisite and if you have disconnected the
battery cable, ensure to connect the battery cable. To connect the battery
cable, follow step 1 and step 2 in the procedure.
Steps 1. Connect the battery cable to the connector on the system board. 2.
Align the screw holes on the base cover with the screw holes on the palm-rest
and keyboard assembly, and then snap the
base cover into place. 3. Tighten the eight captive screws that secure the
base cover to the palm-rest and keyboard assembly.
Next steps 1. Install the SIM card. 2. Follow the procedure in After working
inside your computer.
NOTE: Ensure that your computer is in Service Mode. For more information, see
Before working inside your computer
Removing and installing Customer Replaceable Units (CRUs)
49
Wireless card
Removing the WLAN card
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.
About this task The following image(s) indicate the location of the WLAN card
and provides a visual representation of the removal procedure.
Steps
1. Loosen the screw (M2x3) that secures the WLAN-card bracket to the WLAN
card and palm-rest and keyboard assembly. 2. Lift the WLAN-card bracket off
the WLAN card. 3. Disconnect the antenna cables from the WLAN card. 4. Slide
and remove the wireless card off the WLAN-card slot.
50
Removing and installing Customer Replaceable Units (CRUs)
Installing the WLAN card
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task The following image(s) indicate the location of the WLAN card
and provides a visual representation of the installation procedure.
Steps 1. Connect the antenna cables to the WLAN card.
The following table provides the antenna-cable color scheme for the WLAN card
that is supported by your computer.
Table 33. Antenna-cable color scheme
Connectors on the wireless card
Antenna-cable color Silkscreen marking
Main
White
MAIN
Auxiliary
Black
AUX
(white triangle) (black triangle)
Removing and installing Customer Replaceable Units (CRUs)
51
2. Align the notch on the WLAN card with the tab on the WLAN-card slot. . 3.
Adhere the WLAN card at an angle into the WLAN-card slot 4. Align the screw
hole on the WLAN-card bracket with the screw hole on the WLAN card and palm-
rest and keyboard
assembly. 5. Place the screw (M2x3) that secures the WLAN-card bracket to the
WLAN card and the palm-rest and keyboard assembly.
Next steps 1. Install the base cover. 2. Follow the procedure in After working
inside your computer.
WWAN card (Optional)
Removing the 4G WWAN card (Optional)
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.
About this task NOTE: The following steps are for computers with WWAN support.
The following image(s) indicate the location of the 4G WWAN card and provides
a visual representation of the removal procedure.
52
Removing and installing Customer Replaceable Units (CRUs)
Steps 1. Lift the 4G WWAN-card shield off the 4G WWAN card. 2. Remove the
screw (M2x3) that secures the 4G WWAN-card bracket to the 4G WWAN card. 3.
Lift the 4G WWAN-card bracket off the 4G WWAN card. 4. Disconnect the antenna
cables from the 4G WWAN card. 5. Slide and remove the 4G WWAN card off the 4G
WWAN-card slot on the system board.
Installing the 4G WWAN card (Optional)
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task NOTE: The following steps are for computers with WWAN support.
The following image(s) indicate the location of the 4G WWAN card and provides
a visual representation of the installation procedure.
Removing and installing Customer Replaceable Units (CRUs)
53
Steps 1. Align the notch on the 4G WWAN card with the tab on the 4G WWAN-card
slot. 2. Insert the 4G WWAN card at an angle into the 4G WWAN-card slot . 3.
Connect the antenna cables to the 4G WWAN card.
The following table provides the antenna-cable color scheme for the 4G WWAN
card that is supported by your computer.
Table 34. Antenna-cable color scheme
Connectors on the WWAN card
Antenna-cable color Silkscreen marking
D/G
Black with a thin white 6 Aux
stripe
M2
Blue
8 M2
M1
Orange
7 M1
M
White with a thin gray Main 5
stripe
(white triangle)
(white triangle) (white triangle) (black triangle)
4. Align the screw hole on the 4G WWAN-card bracket with the screw hole on the 4G WWAN card.
54
Removing and installing Customer Replaceable Units (CRUs)
5. Replace the screw (M2x3) that secures the 4G WWAN bracket to the 4G WWAN
card. 6. Align and place the 4G WWAN-card shield over the 4G WWAN card.
Next steps 1. Install the base cover. 2. Follow the procedure in After working
inside your computer.
Removing the 5G WWAN card (Optional)
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.
About this task NOTE: The following steps are for computers with WWAN support.
The following image(s) indicate the location of the 5G WWAN card and provides
a visual representation of the removal procedure.
Removing and installing Customer Replaceable Units (CRUs)
55
Steps 1. Remove the screw (M2x3) that secures the 5G WWAN-card bracket to the
5G WWAN card. 2. Lift the 5G WWAN-card bracket off the 5G WWAN card. 3. Remove
the two screws (M2x3) that secure the 5G WWAN-card shield to the palm-rest and
keyboard assembly. 4. Lift the 5G WWAN-card shield off the 5G WWAN card. 5.
Disconnect the antenna cables from the 5G WWAN card. 6. Slide and remove the
5G WWAN card off the 5G WWAN-card slot on the system board.
Installing the 5G WWAN card (Optional)
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task NOTE: The following steps are for computers with WWAN support.
The following image(s) indicate the location of the 5G WWAN card and provides
a visual representation of the installation procedure.
56
Removing and installing Customer Replaceable Units (CRUs)
Steps 1. Connect the antenna cables to the 5G WWAN card.
The following table provides the antenna-cable color scheme for the 5G WWAN
card that is supported by your computer.
Table 35. Antenna-cable color scheme
Connectors on the WWAN card
Antenna-cable color Silkscreen marking
D/G
Black with a thin white ANT3 D/G
stripe
M2
Blue
ANT2 M2
M1
Orange
ANT1 M1
M
White with a thin gray ANT0 M
stripe
(white triangle)
(white triangle) (white triangle) (white triangle)
2. Align the notch on the 5G WWAN card with the tab on the 5G WWAN-card slot. 3. Insert the 5G WWAN card at an angle into the 5G WWAN-card slot . 4. Align the screw holes on the 5G WWAN-card shield with the screw holes on the palm- rest and keyboard assembly. 5. Replace the two screws (M2x3) that secure the 5G WWAN-card shield to the palm-rest and keyboard assembly. 6. Align the screw hole on the 5G WWAN-card bracket with the screw hole on the 5G WWAN card. 7. Replace the screw (M2x3) that secures the 5G WWAN bracket to the 5G WWAN card.
Next steps
1. Install the base cover. 2. Follow the procedure in After working inside
your computer.
Memory modules
Removing the memory module
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover.
About this task The following image(s) indicate the location of the memory
module and provides a visual representation of the removal procedure.
Removing and installing Customer Replaceable Units (CRUs)
57
Steps 1. Using your fingertips, spread apart the securing clips on the memory-
module slot until the memory module pops up. 2. Slide and remove the memory
module from the memory-module slot on the system board.
NOTE: Repeat step 1 and step 2 if there are more than one memory module
installed on your computer.
Installing the memory module
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task The following image(s) indicate the location of the memory
module and provides a visual representation of the installation procedure.
58
Removing and installing Customer Replaceable Units (CRUs)
Steps 1. Align the notch on the memory module with the tab on the memory-
module slot. 2. Slide the memory module firmly into the slot at an angle and
press the memory module down until it clicks into place.
NOTE: If you do not hear the click, remove the memory module and reinstall it.
Next steps 1. Install the base cover. 2. Install the SIM card. 3. Follow the
procedure in After working inside your computer.
Solid-state drive
Removing the M.2 2230 solid-state drive from Slot 1
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover.
About this task The following image(s) indicate the location of the M.2 2230
solid-state drive in Slot 1 and provides a visual representation of the
removal procedure.
Removing and installing Customer Replaceable Units (CRUs)
59
Steps 1. Remove the two screws (M2x3) that secure the solid-state drive
thermal shield to the palm-rest assembly. 2. Lift the solid-state drive
thermal shield off the palm-rest assembly. 3. Remove the screw (M2x3) that
secures the M.2 2230 solid-state drive to the solid-state drive bracket and
palm-rest
assembly. 4. Slide and lift the M.2 2230 solid-state drive off the solid-state
drive slot. 5. Remove the M.2 2230 solid-state drive mounting bracket from the
palm-rest assembly.
Installing the M.2 2230 solid-state drive in Slot 1
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task The following image(s) indicate the location of the M.2 2230
solid-state drive in Slot 1 and provides a visual representation of the
installation procedure.
60
Removing and installing Customer Replaceable Units (CRUs)
Steps
1. Place the M.2 2230 solid-state drive mounting bracket on its slot on the
palm-rest assembly. 2. Align the notch on the M.2 2230 solid-state drive with
the tab on the M.2 2230 solid-state drive slot. 3. Slide the M.2 2230 solid-
state drive into the M.2 2230 solid-state drive slot. 4. Replace the screw
(M2x3) that secures the M.2 2230 solid-state drive to the solid-state drive
mounting bracket and
palm-rest assembly. 5. Align the screw holes on the solid-state drive thermal
shield with the screw holes on the M.2 2230 solid-state drive and
palm-rest assembly. 6. Replace the two screws (M2x3) that secure the solid-
state drive thermal shield to the M.2 2230 solid-state drive and
palm-rest assembly.
Next steps
1. Install the base cover. 2. Install the SIM card. 3. Follow the procedure
in After working inside your computer.
Removing and installing Customer Replaceable Units (CRUs)
61
Removing the M.2 2280 solid-state drive from Slot 1
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover.
About this task The following image(s) indicate the location of the M.2 2280
solid-state drive in Slot 1 and provides a visual representation of the
removal procedure.
Steps
1. Remove the two screws (M2x3) that secure the solid-state drive thermal
shield to the palm-rest assembly. 2. Lift the solid-state drive thermal shield
off the palm-rest assembly. 3. Remove the screw (M2x3) that secures the M.2
2280 solid-state drive to the solid-state drive bracket and palm-rest
assembly. 4. Slide and lift the M.2 2280 solid-state drive off the solid-state
drive slot. 5. Remove the M.2 2280 solid-state drive transfer bracket.
62
Removing and installing Customer Replaceable Units (CRUs)
Installing the M.2 2280 solid-state drive in Slot 1
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task The following image(s) indicate the location of the M.2 2280
solid-state drive in Slot 1 and provides a visual representation of the
installation procedure.
Steps
1. Place the M.2 2280 solid-state drive holder on its slot on the palm-rest
assembly. 2. Align the notch on the M.2 2280 solid-state drive with the tab on
the M.2 2280 solid-state drive slot. 3. Slide the M.2 2280 solid-state drive
into the M.2 2280 solid-state drive slot. 4. Replace the screw (M2x3) that
secures the M.2 2280 solid-state drive to the solid-state drive holder and
palm-rest
assembly. 5. Align the screw holes on the solid-state drive thermal shield
with the screw holes on the M.2 2280 solid-state drive and
palm-rest assembly. 6. Replace the two screws (M2x3) that secure the solid-
state drive thermal shield to the M.2 2280 solid-state drive and
palm-rest assembly.
Removing and installing Customer Replaceable Units (CRUs)
63
Next steps 1. Install the base cover. 2. Install the SIM card. 3. Follow the
procedure in After working inside your computer.
Removing the M.2 2230 solid-state drive from Slot 2
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover.
About this task The following image(s) indicate the location of the M.2 2230
solid-state drive in Slot 2 and provides a visual representation of the
removal procedure.
Steps 1. Remove the screw (M2x3) that secures the M.2 2230 solid-state drive to the palm-rest assembly.
64
Removing and installing Customer Replaceable Units (CRUs)
2. Slide and lift the M.2 2230 solid-state drive off the solid-state drive
slot.
Installing the M.2 2230 solid-state drive in Slot 2
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task The following image(s) indicate the location of the M.2 2230
solid-state drive in Slot 2 and provides a visual representation of the
installation procedure.
Steps 1. Align the notch on the M.2 2230 solid-state drive with the tab on the
M.2 2230 solid-state drive slot. 2. Slide the M.2 2230 solid-state drive into
the M.2 2230 solid-state drive slot. 3. Replace the screw (M2x3) that secures
the M.2 2230 solid-state drive to the palm-rest assembly.
Next steps 1. Install the base cover.
Removing and installing Customer Replaceable Units (CRUs)
65
2. Install the SIM card. 3. Follow the procedure in After working inside your
computer.
Fan
Removing the fan
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover.
About this task The following image(s) indicate the location of the fan and
provides a visual representation of the removal procedure.
Steps 1. Disconnect the fan cable from the system board. 2. Remove the fan
cable from the routing guides on the palm-rest assembly. 3. Remove the two
screws (M2x4) that secure the fan to the palm-rest assembly. 4. Lift the fan
off the palm-rest assembly.
Installing the fan
CAUTION: The information in this section is intended for authorized service
technicians only.
66
Removing and installing Customer Replaceable Units (CRUs)
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task The following image(s) indicate the location of the fan and
provides a visual representation of the installation procedure.
Steps 1. Align the screw holes on the fan with the screw holes on the palm-
rest assembly. 2. Replace the two screws (M2x4) that secure the fan to the
palm-rest assembly. 3. Route the fan cable through the routing guides on the
palm-rest assembly. 4. Connect the fan cable to the system board.
Next steps 1. Install the base cover. 2. Install the SIM card. 3. Follow the
procedure in After working inside your computer.
Removing and installing Customer Replaceable Units (CRUs)
67
Removing and installing Field Replaceable Units
The replaceable components in this chapter are Field Replaceable Units (FRUs).
CAUTION: The information in this section is intended for authorized service
technicians only.
CAUTION: To avoid any potential damage to the component or loss of data,
ensure that an authorized service technician replaces the Field Replaceable
Units (FRUs). CAUTION: Dell Technologies recommends that this set of repairs,
if needed, to be conducted by trained technical repair specialists. CAUTION:
As a reminder, your warranty does not cover damages that may occur during the
courses of FRU repairs that are not authorized by Dell Technologies.
NOTE: The images in this document may differ from your computer depending on
the configuration you ordered.
Battery
Lithium-ion battery precautions
CAUTION: Exercise caution when handling Lithium-ion batteries. Discharge the
battery completely before removing it. Disconnect the AC power adapter from
the system and
operate the computer solely on battery power–the battery is fully discharged
when the computer no longer turns on when the power button is pressed. Do not
crush, drop, mutilate, or penetrate the battery with foreign objects. Do not
expose the battery to high temperatures, or disassemble battery packs and
cells. Do not apply pressure to the surface of the battery. Do not bend the
battery. Do not use tools of any kind to pry on or against the battery. Ensure
any screws during the servicing of this product are not lost or misplaced, to
prevent accidental puncture or damage to the battery and other system
components. If the battery gets stuck inside your computer as a result of
swelling, do not try to release it as puncturing, bending, or crushing a
lithium-ion battery can be dangerous. In such an instance, contact Dell
technical support for assistance. See www.dell.com/contactdell. Always
purchase genuine batteries from www.dell.com or authorized Dell partners and
resellers. Swollen batteries should not be used and should be replaced and
disposed properly. For guidelines on how to handle and replace swollen
Lithium-ion batteries, see Handling swollen Lithium-ion batteries.
Removing the battery
CAUTION: The information in this section is intended for authorized service
technicians only.
68
Removing and installing Field Replaceable Units (FRUs)
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover.
About this task CAUTION: Removing the battery resets the BIOS setup program’s
settings to default. It is recommended that you note the BIOS setup program’s
settings before removing the battery.
The following image(s) indicate the location of the battery and provides a
visual representation of the removal procedure.
Removing and installing Field Replaceable Units (FRUs)
69
Steps 1. Disconnect the battery cable from the system board (if not
disconnected earlier). 2. Loosen the five captive screws that secure the
battery to the palm-rest assembly. 3. Lift the battery off the palm-rest
assembly. 4. Flip the battery and peel the tape that adheres the battery cable
to the battery. 5. Remove the battery cable from the routing guides on the
battery. 6. Disconnect the battery cable from the connector on the battery. 7.
Remove the battery cable away from the battery.
Installing the battery
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
70
Removing and installing Field Replaceable Units (FRUs)
About this task The following image(s) indicate the location of the battery and provides a visual representation of the installation procedure.
Steps 1. Align and route the battery cable through the routing guides on the
battery. 2. Adhere the tape that secures the battery cable to the battery. 3.
Connect the battery cable to the connector on the battery. 4. Flip the
battery. 5. Using the alignment posts, place the battery on the palm-rest
assembly. 6. Align the screw holes on the battery with the screw holes on the
palm-rest assembly. 7. Tighten the five captive screws that secure the battery
to the palm-rest assembly. 8. Connect the battery cable to the system board.
Next steps 1. Install the base cover. 2. Install the SIM card. 3. Follow the
procedure in After working inside your computer.
Removing and installing Field Replaceable Units (FRUs)
71
Assembly inner frame
Removing the assembly-inner frame
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover. 4. Remove the battery. 5.
Remove the 4G WWAN card or 5G WWAN card, as applicable. 6. Remove the WLAN
card.
About this task The following images indicate the location of the assembly-
inner frame and provide a visual representation of the removal procedure.
72
Removing and installing Field Replaceable Units (FRUs)
Figure 2. Inner frame removal
Steps 1. Remove the antenna cables from the routing guides on the palm-rest
assembly. 2. Disconnect the speaker cable from the system board. 3. Remove the
speaker cables from the routing guides on the palm-rest assembly. 4. Remove
the twelve screws (M2x3) that secure the assembly-inner frame to the palm-rest
assembly. 5. Remove the assembly-inner frame off the palm-rest assembly.
Installing the assembly-inner frame
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task The following images indicate the location of the assembly-
inner frame and provide a visual representation of the installation procedure.
Removing and installing Field Replaceable Units (FRUs)
73
74
Removing and installing Field Replaceable Units (FRUs)
Steps 1. Align the screw holes on the assembly-inner frame with the screw
holes on the system board and the palm-rest assembly. 2. Replace the twelve
screws (M2x3) that secure the assembly-inner frame to the palm-rest assembly.
3. Connect the speaker cable to the system board. 4. Route the speaker cables
through the routing guides on the palm-rest assembly. 5. Route the antenna
cables through the routing guides on the palm-rest assembly.
Next steps 1. Install the WLAN card. 2. Install the 4G WWAN card or 5G WWAN
card, as applicable. 3. Install the battery. 4. Install the base cover. 5.
Install the SIM card. 6. Follow the procedure in After working inside your
computer.
Speakers
Removing the speakers
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover.
Removing and installing Field Replaceable Units (FRUs)
75
About this task The following images indicate the location of the speakers and provide a visual representation of the removal procedure.
Steps 1. Disconnect the speaker cable from the system board. 2. Remove the
speaker cables from the routing guides on the palm-rest assembly. 3. Lift the
right and left speakers, along with its cable, off the palm-rest assembly.
Installing the speakers
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task The following images indicate the location of the speakers and
provide a visual representation of the installation procedure.
76
Removing and installing Field Replaceable Units (FRUs)
Steps 1. Using the alignment posts, place the left and right speakers into
their slots on the palm-rest assembly. 2. Route the speaker cable through the
routing guides on the palm-rest assembly. 3. Connect the speaker cable to the
system board.
Next steps 1. Install the base cover. 2. Install the SIM card. 3. Follow the
procedure in After working inside your computer.
Coin-cell battery
Removing the coin-cell battery
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover. 4. Remove the battery. 5.
Remove the assembly-inner frame.
About this task The following image(s) indicate the location of the coin-cell
battery and provides a visual representation of the removal procedure.
Removing and installing Field Replaceable Units (FRUs)
77
Steps 1. Disconnect the coin-cell battery cable from the system board. 2. Peel
the coin-cell battery, along with its cable, off the palm-rest assembly.
Installing the coin-cell battery
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task The following image(s) indicate the location of the coin-cell
battery and provides a visual representation of the installation procedure.
78
Removing and installing Field Replaceable Units (FRUs)
Steps 1. Adhere the coin-cell battery on to the coin-cell battery slot on the
palm-rest assembly. 2. Connect the coin-cell battery cable to the connector on
the system board.
Next steps 1. Install the assembly-inner frame. 2. Install the battery. 3.
Install the base cover. 4. Install the SIM card. 5. Follow the procedure in
After working inside your computer.
Heat sink
Removing the heat sink (Discrete GPU)
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover.
About this task NOTE: The heat sink may become hot during normal operation.
Allow sufficient time for the heat sink to cool before you touch it. NOTE: For
maximum cooling of the processor, do not touch the heat transfer areas on the
heat sink. The oils in your skin can reduce the heat transfer capability of
the thermal grease.
The following images indicate the location of the heat sink and provide a
visual representation of the removal procedure.
Removing and installing Field Replaceable Units (FRUs)
79
Steps 1. Loosen the seven captive screws that secure the heat sink to the
system board.
NOTE: Loosen the captive screws in the reverse sequential order mentioned on
the heat sink [7 > 6 > 5 > 4 > 3 > 2 > 1]. NOTE: The number of screws varies
depending on the configuration ordered.
2. Remove the screw (M2x4) that secures the heat sink to the system board. 3.
Lift the heat sink from the system board.
Installing the heat sink (Discrete GPU)
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task NOTE: If either the system board or the heat sink is replaced,
use the thermal grease provided in the kit to ensure that thermal conductivity
is achieved.
The following images indicate the location of the heat sink and provide a
visual representation of the installation procedure.
80
Removing and installing Field Replaceable Units (FRUs)
Steps 1. Place the heat sink on the system board. 2. Tighten the seven captive
screws that secure the heat sink to the system board.
NOTE: Tighten the captive screws in the sequential order mentioned on the heat
sink [1 > 2 > 3 > 4 >5 > 6 > 7].
NOTE: The number of screws varies depending on the configuration ordered.
3. Replace the screw (M2x4) that secures the heat sink to the system board.
Next steps 1. Install the base cover. 2. Install the SIM card. 3. Follow the
procedure in After working inside your computer.
Removing the heat sink (Integrated GPU)
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover.
About this task NOTE: The heat sink may become hot during normal operation.
Allow sufficient time for the heat sink to cool before you touch it. NOTE: For
maximum cooling of the processor, do not touch the heat transfer areas on the
heat sink. The oils in your skin can reduce the heat transfer capability of
the thermal grease.
The following images indicate the location of the heat sink and provide a
visual representation of the removal procedure.
Removing and installing Field Replaceable Units (FRUs)
81
Steps 1. Loosen the four captive screws that secure the heat sink to the
system board.
NOTE: Loosen the captive screws in the reverse sequential order mentioned on
the heat sink [4 > 3 > 2 > 1]. NOTE: The number of screws varies depending on
the configuration ordered.
2. Remove the screw (M2x4) that secures the heat sink to the system board. 3.
Lift the heat sink from the system board.
Installing the heat sink (Integrated GPU)
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task NOTE: If either the system board or the heat sink is replaced,
use the thermal grease provided in the kit to ensure that thermal conductivity
is achieved.
The following images indicate the location of the heat sink and provide a
visual representation of the installation procedure.
82
Removing and installing Field Replaceable Units (FRUs)
Steps 1. Place the heat sink on the system board. 2. Tighten the four captive
screws that secure the heat sink to the system board.
NOTE: Tighten the captive screws in the sequential order mentioned on the heat
sink [1 > 2 > 3 > 4].
NOTE: The number of screws varies depending on the configuration ordered.
3. Replace the screw (M2x4) that secures the heat sink to the system board.
Next steps 1. Install the base cover. 2. Install the SIM card. 3. Follow the
procedure in After working inside your computer.
System board
Removing the system board
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover. 4. Remove the 4G WWAN card
or 5G WWAN card, as applicable. 5. Remove the WLAN card. 6. Remove the memory
modules. 7. Remove the M.2 2230 or M.2 2280 solid-state drive from Slot 1, as
applicable. 8. Remove the M.2 2230 solid-state drive from Slot 2, if
applicable.
Removing and installing Field Replaceable Units (FRUs)
83
9. Remove the heat sink (discrete GPU) or heat sink (integrated GPU), as
applicable. 10. Remove the battery. 11. Remove the assembly-inner frame.
About this task The following images indicate the system board connectors.
1. WWAN-card connector 3. Sensor board-cable connector 5. Display-cable connector 7. Solid-state drive Slot 1 9. Battery-cable connector 11. USH-cable connector 13. Speaker-cable connector
2. WLAN-card connector 4. Memory modules 6. System-fan connector 8. Touchpad- cable connector 10. Solid-state drive Slot 2 12. Coin-cell battery cable connector
The following images indicate the location of the system board and provide a visual representation of the removal procedure.
84
Removing and installing Field Replaceable Units (FRUs)
Steps
1. Remove the two screws (M2x3) that secure the display-cable bracket to the
palm-rest assembly.. 2. Lift the display-cable bracket off the palm-rest
assembly. 3. Remove the three screws (M2x4) that secure the Type-C bracket to
the palm-rest assembly.. 4. Lift the Type-C bracket off the palm-rest
assembly. 5. Lift up the black flap near the antenna cables and uncover the
sensor board-cable.
Removing and installing Field Replaceable Units (FRUs)
85
6. Disconnect the sensor board-cable from the connector on the system board.
7. Disconnect the display cable from the connector on the system board. 8.
Remove the display cable from the routing guides on the system board. 9.
Disconnect the fan cable from the connector on the system board. 10. Open the
latch and disconnect the touchpad cable from the connector on the system
board. 11. Open the latch and disconnect the USH cable from the USH module.
12. Disconnect the coin-cell battery cable from the connector on the system
board. 13. Remove the three screws (M2x3) that secure the system board to the
palm-rest assembly. 14. Lift the system board off the palm-rest assembly.
Installing the system board
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task The following images indicate the system board connectors.
1. WWAN-card connector 3. Sensor board-cable connector 5. Display-cable connector 7. Solid-state drive Slot 1 9. Battery-cable connector 11. USH-cable connector 13. Speaker-cable connector
2. WLAN-card connector 4. Memory modules 6. System-fan connector 8. Touchpad- cable connector 10. Solid-state drive Slot 2 12. Coin-cell battery cable connector
The following images indicate the location of the system board and provide a visual representation of the installation procedure.
86
Removing and installing Field Replaceable Units (FRUs)
Removing and installing Field Replaceable Units (FRUs)
87
Steps
1. Align and place the system board on its slot on the palm-rest assembly. 2.
Replace the three screws (M2x3) that secure the system board to the palm-rest
assembly. 3. Connect the sensor board-cable to the connector on the system
board. 4. Connect the display cable to the connector on the system board. 5.
Route the display cable through the routing guides on the system board. 6.
Connect the fan cable to the connector on the system board. 7. Connect the
touchpad cable to the connector on the system board and close the latch. 8.
Connect the USH cable to the USH module and close the latch. 9. Connect the
coin-cell battery cable to the connector on the system board. 10. Adhere the
black flap near the antenna cables and cover the sensor board-cable. 11. Place
the display-cable bracket over the display cable. 12. Replace the two screws
(M2x3) that secure the display-cable bracket to the palm-rest assembly.. 13.
Place the Type-C bracket on its slot on the palm-rest assembly. 14. Replace
the three screws (M2x4) that secure the Type-C bracket to the palm-rest
assembly..
88
Removing and installing Field Replaceable Units (FRUs)
Next steps 1. Install the assembly-inner frame. 2. Install the battery. 3.
Install the heat sink (discrete GPU) or heat sink (integrated GPU), as
applicable. 4. Install the M.2 2230 solid-state drive in Slot 2, if
applicable. 5. Install the M.2 2230 or M.2 2280 solid-state drive in Slot 1,
as applicable. 6. Install the memory modules. 7. Install the WLAN card. 8.
Install the 4G WWAN card or 5G WWAN card, as applicable. 9. Install the base
cover. 10. Install the SIM card. 11. Follow the procedure in After working
inside your computer.
Power button
Removing the power button
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover. 4. Remove the battery. 5.
Remove the 4G WWAN card or 5G WWAN card, as applicable. 6. Remove the WLAN
card. 7. Remove the memory modules. 8. Remove the M.2 2230 or M.2 2280 solid-
state drive from Slot 1, as applicable. 9. Remove the M.2 2230 solid-state
drive from Slot 2, if applicable. 10. Remove the heat sink (discrete GPU) or
heat sink (integrated GPU), as applicable. 11. Remove the assembly-inner
frame. 12. Remove the system board.
About this task The following images indicate the location of the power button
and provide a visual representation of the removal procedure.
Removing and installing Field Replaceable Units (FRUs)
89
Steps 1. Remove the two (M2x2.5) screws that secure the power button to the
palm-rest assembly. 2. Lift the power button off the palm-rest assembly.
Installing the power button
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task The following images indicate the location of the power board
and provide a visual representation of the installation procedure.
90
Removing and installing Field Replaceable Units (FRUs)
Steps 1. Align and place the power button on the palm-rest assembly. 2.
Replace the two (M2x2.5) screws to secure the power button to the palm-rest
assembly.
Next steps 1. Install the system board. 2. Install the assembly-inner frame.
3. Install the heat sink (discrete GPU) or heat sink (integrated GPU), as
applicable. 4. Install the M.2 2230 solid-state drive in Slot 2, if
applicable. 5. Install the M.2 2230 or M.2 2280 solid-state drive in Slot 1,
as applicable. 6. Install the memory modules. 7. Install the WLAN card. 8.
Install the 4G WWAN card or 5G WWAN card, as applicable. 9. Install the
battery. 10. Install the base cover. 11. Install the SIM card. 12. Follow the
procedure in After working inside your computer.
Power button with optional fingerprint reader
Removing the power button with optional fingerprint reader
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites 1. Follow the procedure in Before working inside your computer.
2. Remove the SIM card. 3. Remove the base cover. 4. Remove the battery.
Removing and installing Field Replaceable Units (FRUs)
91
5. Remove the 4G WWAN card or 5G WWAN card, as applicable. 6. Remove the WLAN
card. 7. Remove the memory modules. 8. Remove the M.2 2230 or M.2 2280 solid-
state drive from Slot 1, as applicable. 9. Remove the M.2 2230 solid-state
drive from Slot 2, if applicable. 10. Remove the heat sink (discrete GPU) or
heat sink (integrated GPU), as applicable. 11. Remove the assembly-inner
frame. 12. Remove the system board.
About this task
The following images indicate the location of the power button and provide a
visual representation of the removal procedure.
Steps 1. Remove the two (M2x2.5) screws that secure the power button to the
palm-rest assembly. 2. Lift the power button off the palm-rest assembly.
Installing the power button with optional fingerprint reader
CAUTION: The information in this section is intended for authorized service
technicians only.
Prerequisites If you are replacing a component, remove the existing component
before performing the installation process.
About this task The following images indicate the location of the power board
and provide a visual representation of the installation procedure.
92
Removing and installing Field Replaceable Units (FRUs)
Steps 1. Align and place the power button on the palm-rest assembly. 2.
Replace the two (M2x2.5) screws to secure the power button to the palm-rest
assembly.
Next steps 1. In
References
- Microsoft Support
- Il motore di ricerca per risparmiare sui tuoi acquisti | Trovaprezzi.it
- ubuntu.com/support
- Dell - Dell Linux - Community Web
- Enabling Seamless and Secure Payments Worldwide | EMVCo
- Notebook al miglior prezzo | Trovaprezzi.it
- Microsoft Support
- Dell - Dell Linux - Community Web
- ubuntu.com/support
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