DELL U4025QW UltraSharp 40 Curved Thunderbolt Hub Monitor User Guide
- May 15, 2024
- Dell
Table of Contents
DELL U4025QW UltraSharp 40 Curved Thunderbolt Hub Monitor
Specifications
- Model: U4025QW
- Regulatory model: U4025QWt
- Resolution specifications: 3840 x 1600 at 60Hz
- ThunderboltTM 4 out for daisy chain
- Speaker specifications: 9W x 2 speakers
- Plug-and-Play capability
- Physical characteristics: Curved display, dimensions (W x H x D): 37.48″ x 20.66″ x 9.84″
Product Usage Instructions
Safety Instructions
Follow all safety instructions provided in the user manual to ensure safe operation of the monitor.
Setting Up the Monitor
- Attach the stand to the monitor following the instructions provided in the manual.
- Adjust the tilt, swivel, and vertical extension to your preferred viewing angle.
- Organize your cables neatly to avoid clutter and tangling.
Connecting Your Monitor
Connect your monitor to your computer using the appropriate cables (HDMI, DisplayPort, Thunderbolt) based on your system requirements.
Dell Power Button Sync (DPBS)
Utilize the Dell Power Button Sync feature for seamless power control of your monitor with compatible Dell systems.
FAQs
- Q: What is the maximum resolution supported by the monitor?
- A: The monitor supports a maximum resolution of 3840 x 1600 at 60Hz.
- Q: How do I clean my monitor?
- A: To clean your monitor, use a soft, dry cloth to gently wipe the screen. Avoid using harsh chemicals or abrasive materials.
“`
Dell UltraSharp 40 Curved ThunderboltTM Hub Monitor-U4025QW User’s Guide
Model: U4025QW Regulatory model: U4025QWt
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.
Copyright © 2024 Dell Inc. or its subsidiaries. All rights reserved. Dell,
EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Other trademarks may be trademarks of their respective owners. 2024 02 Rev.
A00
Safety instructions
Use the following safety guidelines to protect your monitor 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 monitor.
NOTE: Before using the monitor, read the safety information that is shipped
with your monitor and printed on the product. Keep the documentation at a
secure location for future reference. WARNING: Use of controls, adjustments,
or procedures other than those specified in this documentation may result in
exposure to shock, electrical hazards, and/or mechanical hazards. WARNING: The
possible long-term effect of listening to audio at high volume through the
headphones (on monitor that support it) may cause damage to your hearing
ability. · Place the monitor on a solid surface and handle it carefully. The
screen is fragile
and can be damaged if dropped or hit with a sharp object. · Ensure that your
monitor is electrically rated to operate with the AC power
available in your location. · Keep the monitor in room temperature. Excessive
cold or hot conditions can have
an adverse effect on the liquid crystals of the display. · Connect the power
cable from the monitor to a wall outlet that is near and
accessible. See Connecting your monitor. · Do not place and use the monitor on
a wet surface or near water. · Do not subject the monitor to severe vibration
or high impact conditions. For
example, do not place the monitor inside a car trunk. · Unplug the monitor
when it is going to be left unused for an extended period. · To avoid electric
shock, do not attempt to remove any cover or touch internal
part of the monitor. · Read these instructions carefully. Keep this document
for future reference. Follow
all warnings and instructions marked on the product. · Certain monitors can be
wall mounted using the VESA mount that is sold
separately. Ensure to use the correct VESA specifications as mentioned in the
wall mounting section of the User’s Guide. For information on safety
instructions, see the Safety, Environmental, and Regulatory Information (SERI)
document that is shipped with your monitor.
Safety instructions | 5
About your monitor
Package contents
The following table provides the list of components that are shipped with your
monitor, If any component is missing, contact Dell. For more information, see
Contact Dell.
NOTE: Some items may be optional and may not ship with your monitor. Some
features may not be available in certain countries.
Component image
Component description Display
Stand riser
Stand base
Power cable (varies by country or region)
DisplayPort 1.4 cable (DisplayPort to DisplayPort) Cable length – 1.8 M USB
Type-A to USB Type-C Gen2 cable (Enables USB ports on the monitor) Cable
length – 1 M
About your monitor
HDMI 2.1 cable Cable length – 1.8 M
ThunderboltTM 4 Active cable Cable length – 1.5 M
· Quick Setup Guide · Safety, Environmental, and Regulatory
Information · Factory Calibration Report
Product features
The Dell UltraSharp U4025QW monitor has an active matrix, Thin-Film Transistor
(TFT), Liquid Crystal Display (LCD), and LED backlight. The monitor features
include:
· 100.859 cm (39.7 in.) active area display (Measured diagonally) 5120 x 2160
(21:9) resolution, plus full-screen support for lower resolutions.
· Wide viewing angles with 100% sRGB color, 99% DCI-P3, 100% BT.709 & 99%
Display P3.
· Tilt, swivel, and vertical extension adjustment capabilities. · Integrated
speakers (2 x 9 W). · Removable pedestal stand and Video Electronics Standards
Association (VESATM)
100 mm mounting holes for flexible mounting solutions. · Ultra-thin bezel
minimizes the bezel gap during multi-monitor usage, enabling
easier setup with an elegant viewing experience. · Digital connectivity with
DisplayPort, ThunderboltTM and HDMI (supports up to
5K2K 5120 x 2160 120Hz FRL, HDR Static Metadata, VRR as per specified in HDMI
2.1.). · ThunderboltTM 4 ports to supply power for compatible notebook up to
140 W while receiving Video and USB signal. · ThunderboltTM 4 and RJ45 ports
enable a single-cable, network-connected experience. · Plug and play
capability if supported by your computer. · On-Screen Display (OSD)
adjustments for ease of set-up and screen optimization. · Power and OSD
buttons lock. · Security lock slot. · Stand lock.
About your monitor | 7
· Power consumption 0.3 W in Standby Mode (DisplayPort or HDMI port and
without upstream port connector).
· This monitor supports VRR (Variable refresh rate) function, get higher frame
rates and help reduce screen tearing in games.
· This monitor supports DRR (Dynamic refresh rate) function. DRR works with
Windows 11, allowing you to experience smoother text scroll and mouse cursor
movement.
· Supports Dell Text to Speech (English) device.
· Supports Picture by Picture (PBP) and Picture in Picture (PIP) Select mode.
· Supports internal Multi-Stream Transport (MST) function (Screen Partition
item in OSD) for DP port and ThunderboltTM 4 (Video + Data).
· Allows you to switch USB KVM function in PBP/PIP mode.
· The monitor is designed with a Dell Power Button Sync (DPBS) feature to
control PC system power state from a monitor power button.
Dell system that supports DPBS is listed in the Dell website. DPBS function can be enabled in the OSD menu under Display.
· Premium Panel Exchange for peace of mind.
· Optimize eye comfort with a flicker-free screen and low blue light feature
to minimizes hazard blue light emission.
· Dell ComfortView Plus is an integrated low blue light screen feature that
improves eye comfort by reducing potentially harmful blue light emissions
without compromising color. Through ComfortView Plus technology, Dell has
reduced harmful blue light exposure from 50% to 35%. This monitor is certified
with TÜV Rheinland Eye Comfort 3.0 with a 5-star rating. It incorporates key
technologies that also deliver a flicker-free screen, up to 120 Hz refresh
rate, a color gamut of minimum 95% DCI-P3, color accuracy, and ambient light
sensor performance. Dell ComfortView Plus feature is enabled by default on
your monitor.
· This monitor uses a low blue light panel. When the monitor is reset to
factory settings or default setting, it is in compliance with TÜV Rheinland’s
hardware low blue light certification.**
Blue light ratio:
The ratio of light in the range from 415nm-455nm compared to 400nm-500nm shall
be less than 50%.
Category 1 2 3
Blue light ratio 20%
20% < R 35% 35% < R 50%
8 | About your monitor
· Decreases the level of hazard blue light emitted from the screen to make
viewing more comfortable for your eyes without distortion of color accuracy.
· The Monitor adopts Flicker-Free technology, which clears the eye visible
flicker, brings comfort viewing experience and preventing users suffer from
eye strain and fatigue.
- For Dell systems that support this feature. ** This monitor is in compliance with TÜV Rheinland hardware low blue light certification under Category 2.
About your monitor | 9
About TÜV Rheinland Eye Comfort 3.0 TÜV Rheinland Eye Comfort 3.0
certification program presents a consumer-friendly star rating scheme to the
display industry promoting eye wellness from safety to eye care. Compared to
existing certifications, the 5-star-rating program adds rigorous testing
requirements on overall eye care attributes such as low blue-light,
flickerfree, refresh rate, color gamut, color accuracy and ambient light
sensor performance. It lays out requirement metrics and rates the product
performance on five levels, and the sophisticated technical assessment process
provides consumers and buyers with indicators that are easier to judge. The
eye wellness factors being considered remain constant, however, the standards
for the various star ratings are different. The higher the star rating, the
more stringent the standards. The table below lists the major eye comfort
requirements which apply in addition to the basic eye comfort requirements
(such as pixel density, uniformity of luminance and color, and freedom of
movement). For more information around TÜV Eye Comfort certification please
refer to: https://www.tuv.com/ world/en/eye-comfort.html
10 | About your monitor
Eye Comfort 3.0 Requirements and Star Rating Scheme for Monitors
Category Eye Care
Ambient Light Management
Test item
3-star TÜV Hardware LBL
Low Blue Light
Category III (50%) or Software LBL
solution¹
Flicker Free
TÜV Flicker Reduced or TÜV Flicker Free
Ambient Light Sensor performance
No sensor
Intelligent CCT control
No
Intelligent Luminance control
No
Refresh Rate
60Hz
Star Rating Scheme
4-star
5-star
TÜV Hardware LBL Category II (35%) or Category I (20%)
TÜV Hardware LBL Category II (35%) or Category I (20%)
TÜV Flicker Reduced or TÜV Flicker Free
Flicker
Free
No sensor
Ambient light sensor
No
Yes
No 75Hz
Yes 120Hz
Luminance uniformity Luminance uniformity 75%
Image quality
Eye Comfort User Guide
Remark
Color Uniformity Freedom of movement Gamma difference
Wide color gamut2
Color uniformity u’v’ 0.02
Luminance changes shall decrease less than 50%;
The colour shift shall be less than 0.01 Gamma difference Gamma difference Gamma difference
±0.2
±0.2
±0.2
DCI-P35 Min.
95% (CIE 1976) &
NTSC3 Min.72% (CIE 1931) or sRGB4 Min 95% (CIE 1931)
sRGB4 Min.95%
sRGB4 Min.95% (CIE
(CIE 1931) or
Adobe RGB6 Min.95%
(CIE 1931) & sRGB4
Min.95% (CIE 1931)
User guide
Yes
Yes
Yes
¹ Software controls the blue light emission by reducing excessive blue light, resulting in a more yellow tone. 2 Color gamut describes the availability of colors in the display. Various standards were developed for specific purposes. 100% corresponds to the full color space as defined in the standard. 3 NTSC stands for National Television Standards Committee, which developed a color space for the television system that is used in the United States. 4 sRGB is a standard red, green, and blue color space that is in use on monitors, printers, and the World Wide Web. 5 DCI-P3, short for Digital Cinema Initiatives – Protocol 3, is a color space used in digital cinema that encompasses a wider range of colors than the standard RGB color space. 6 Adobe RGB is a color space created by Adobe Systems that encompasses a broader range of colors than the standard RGB color model, particularly in the cyans and greens.
About your monitor | 11
Operating system compatibility
· Windows 10 and later · macOS 12 and macOS 13 The operating system
compatibility on Dell and Alienware branded monitors may vary based on factors
such as: · Specific release date(s) when operating system versions, patches,
or updates are
available. · Specific release date(s) when Dell and Alienware branded monitor
firmware,
software application, or driver updates are available on the Dell support
website.
12 | About your monitor
Identifying parts and controls
Front view
1
23
Label 1
2
3
Description Power LED indicator
2 x USB Type-C® downstream port (SuperSpeed USB 10 Gbps, USB 3.2 Gen2) with
power charging (15W)
Use
Solid white light indicates that the monitor is turned on and functioning as
expected. Breathing white light indicates that monitor is in Standby Mode.
Connect your USB device.
Port with icon supports 5 V/ 3 A.
USB Type-A downstream port Connect your USB device.
(SuperSpeed USB 10 Gbps, USB Port with battery icon supports 3.2 Gen2) with
BC1.2 5 V/1.5 A Battery Charging Rev. 1.2. typical (2 A max) power charging
NOTE: You can use this port only after you have connected the USB cable (A to
C or C to C) to the USB-C® upstream port at the rear of the monitor to the PC.
NOTE: USB Type-C® and USB-C® are registered trademarks of the USB
Implementers Forum.
About your monitor | 13
Top view
1
Label 1
Description Ambient Light Sensor
Use
Detects ambient light and adjusts the brightness of the display accordingly.
For more information, see Auto Brightness. NOTE: If the Ambient Light Sensor
detects an abnormal change in the light level, see The detected light level
drops significantly.
14 | About your monitor
Back view
1 2 3
4
5
6
7
Label Description
Use
1
VESA mounting holes Wall-mount monitor using VESA-
(100 mm x 100 mm- compatible wall mount kit (100 mm x 100 mm).
behind attached VESA
cover)
2 Regulatory label
Lists the regulatory approvals.
3 Stand release button Releases stand from the monitor.
4 Power button
To turn the monitor on or off.
5 Joystick
Use it to control the OSD menu.
For more information, see Operating the Monitor.
6 Mac address, Barcode, See this label if you need to contact Dell for technical
serial number, and
support. The Service Tag is a unique alphanumeric
Service Tag label
identifier that enables Dell service technicians to
identify the hardware components in your computer
and access warranty information.
7
Cable-management Use to organize cables by inserting them through the
slot
slot.
About your monitor | 15
Bottom view
14
13
14
12
3 4 5 67 8 9 10 11 12
Label Description
Use
1
Security lock slot Secures monitor with security cable lock (sold
(based on
separately).
Kensington Security
SlotTM)
2
Connect the power cable.
Power connector
3 HDMI 2.1
Connect your computer with the HDMI cable.
4
Connect your computer with the DisplayPort cable.
DisplayPort in
5
ThunderboltTM 4 downstream ports used only for daisy
chain to another monitor with ThunderboltTM or USB-C®
ThunderboltTM 4 downstream port (15W) for daisy
cable. NOTE: 1) ThunderboltTM 4 up to 40 Gbps bandwidth;
chaining
- Supports up to two 5K monitors through the Daisy
(Video + Data)
chain;
- The highest power output is up to 15 W or 5 V/3 A.
NOTE: Remove the rubber plug when using ThunderboltTM 4 downstream connector.
16 | About your monitor
6
Connect to your computer using the ThunderboltTM
cable.
ThunderboltTM
The ThunderboltTM 4 upstream enable the following
4 upstream port features:
(Video + Data). Alternate mode with DisplayPort 1.4, Power Delivery up to 140W
a) Dynamically allocate 40 Gbps of bandwidth for USB signal and Alt-DP video.
b) Maximum resolution of 5120 x 2160 at 120 Hz with Alt-DP 1.4 DSC video
source.
c) Maximum USB PD up to 140 W.
NOTE: If ThunderboltTM upstream power is more than
100 W, the connected equipment and accessory cables
should have fire enclosure of V1 level or higher and VW-1
rating wire.
NOTE: ThunderboltTM 4 upstream is not supported on Windows versions that are prior to Windows 10.
CAUTION: A reduced performance warning message may appear when connecting monitor’s ThunderboltTM
4 port to USB Type-C port of computer. To optimize
performance, recommended to connect to computer’s ThunderboltTM 4 port.
7
Connect the USB-C to A cable that comes with
USB Type-C®
your monitor to the computer. This cable is needed
upstream port
when HDMI or DP video is in use. It is to enable USB
(SuperSpeed USB communication between the Monitor downstream
10 Gbps, USB 3.2 devices and the host.
Gen2) (data only) NOTE: Remove the rubber plug when using USB-C®
upstream connector.
8,9,11
USB Type-A downstream port (SuperSpeed USB 10 Gbps, USB 3.2 Gen2) (4)
10
Audio line-out
Connect your USB device. You can use these ports only after you have connected the USB cable from the computer to the monitor.
The port with
icon supports Menu Voice function.
Connect speakers to playback audio through HDMI or DisplayPort audio channels.
Only two-channel audio is supported.
NOTE: The audio line-out port does not support headphones.
About your monitor | 17
12 RJ45 port
Connect to Ethernet router with RJ45 cable. To enable network access, either
USB-C® or ThunderboltTM 4
upstream port must be connected to the host computer
with an appropriate cable mentioned above.
13 Stand lock
Lock the stand to the monitor using a M3 x 8 mm screw (screw not included).
14 Built-in speakers To output the sound from an audio input.
NOTE: ThunderboltTM is a trademark of Intel Corporation.
Monitor specifications
Screen type
Active matrix – TFT LCD
Panel Type
In-plane switching Technology
Aspect ratio
21:9
Viewable image dimensions
Diagonal
1008.59 mm (39.7 in.)
Active Area
Horizontal
929.28 mm (36.59 in.)
Vertical
392.04 mm (15.43 in.)
Area
364314.9 mm2 (564.69 in.2)
Pixel pitch
0.1815 mm x 0.1815 mm
Pixel per inch (PPI) 140
Viewing angle
Horizontal
178° (typical)
Vertical
178° (typical)
Brightness
450 cd/m² (typical) 600 cd/m² (HDR Peak)
Contrast ratio
2000 to 1 (typical)
Curvature
2500R
Display screen coating Anti-Glare with 3H hardness
Backlight
LED Edgelight System
Response Time (Gray 5 ms (Fast mode)
to Gray)
8 ms (Normal mode)
18 | About your monitor
Color depth
1.07 Billion colors (8bit + A-FRC)*
Color gamut**
sRGB 100% BT.709 100% DCI-P3 99% Display P3 99%
Calibration accuracy DCI-P3, Display P3, sRGB & BT.709: Delta E < 2 (Average)
Connectivity
· 1 x HDMI (supports up to 5K2K 5120 x 2160 120Hz FRL, HDR Static Metadata,
VRR as per specified in HDMI 2.1.)
· 1 x DP 1.4 (HDCP 2.3) (Support up to 5120 x 2160 120Hz, HDR, DSC)
· 1 x ThunderboltTM 4 downstream port (15 W) for daisy chaining (Video + Data)
· 1 x ThunderboltTM 4 (140 W) (Alternate mode with DisplayPort 1.4, SuperSpeed
USB 3.2 Gen2 (10 Gbps) upstream port, USB Power Delivery up to 140 W)
· 1 x USB Type-C® upstream port (data only) (SuperSpeed USB 10 Gbps, USB 3.2
Gen2)
· 4 x USB Type-A downstream port (SuperSpeed USB 10 Gbps, USB 3.2 Gen2)
· 1 x Audio line-out
· 1 x RJ45 (2.5GbE)
Quick Access:
· 1 x USB Type-A downstream port (SuperSpeed USB 10 Gbps, USB 3.2 Gen2) with
BC1.2 power charging
· 2 x USB Type-C® downstream port (SuperSpeed USB 10 Gbps, USB 3.2 Gen2) with
power charging (15W)
Border width (edge of monitor to active area)
Top Left/Right Bottom
11.30 mm 11.30 mm 15.80 mm
Adjustability
Height adjustable stand
150 mm
Tilt
-5° to 21°
Swivel
-30° to 30°
About your monitor | 19
NOTE: Do not mount or use this monitor in portrait (vertical) orientation or inverse (180°) landscape mount as it may damage the monitor.
Cable management Yes
Dell Display Manager Easy Arrange and other key features (DDM)Compatibility
Security
Security lock slot (cable lock sold separately)
*The monitor is capable of producing 1.07 billion colors at maximum resolution 5120 x 2160 @ 120 Hz with DP 1.4 DSC, ThunderboltTM ALT-DP 1.4 DSC or HDMI 2.1 Video source.
** At panel native only, under Color Space preset.
Resolution specifications
Horizontal scan range Vertical scan range
Maximum preset resolution
Video display capabilities (HDMI & DP & ThunderboltTM 4 (140 W) alternate
mode)
25 kHz to 280 kHz 48 Hz to 120 Hz 5120 x 2160 at 120 Hz 480p, 560p, 720p, 1080p
Preset display modes
Display mode
VESA, 720 x 400 VESA, 640 x 480 VESA, 640 x 480 VESA, 800 x 600 VESA, 800 x
600 VESA, 1024 x 768 VESA, 1024 x 768 VESA, 1152 x 864 VESA, 1280 x 800 VESA,
1280 x 1024 VESA, 1280 x 1024 VESA, 1600 x 1200
Horizontal frequency (kHz) 31.50 31.50 37.50 37.90 46.90 48.40 60.00 67.50 49.70 64.00 80.00 75.00
Vertical frequency (Hz) 70.00 60.00 75.00 60.30 75.00 60.00 75.00 75.00 60.00 60.00 75.00 60.00
Pixel clock Sync polarity
(MHz) (Horizontal/
Vertical)
28.30
-/+
25.20
-/-
31.50
-/-
40.00
+/+
49.50
+/+
65.00
-/-
78.80
+/+
108.00
+/+
83.50
+/+
108.00
+/+
135.00
+/+
162.00
+/+
20 | About your monitor
VESA, 1680 x 1050 VESA, 1920 x 1080 VESA, 1920 x 1200 VESA, 2048 x 1152 VESA, 2048 x 1280 VESA, 2560 x 1080 VESA, 1024 x 2160 VESA, 1280 x 2160 VESA, 2560 x 2160 VESA, 3840 x 2160 VESA, 3840 x 2160 VESA, 3840 x 2160 VESA, 4096 x 2160 VESA, 4096 x 2160 VESA, 5120 x 2160 VESA, 5120 x 2160 VESA, 5120 x 2160
65.29 67.50 74.04 70.99 78.92 66.64 133.24 133.15 133.27 65.58 135.00 133.31 65.67 133.28 65.73 133.32 270.00
60.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 30.00 60.00 60.00 30.00 60.00 30.00 60.00 120.00
146.25
-/+
148.50
+/+
154.00
+/-
156.75
+/-
174.25
+/-
181.25
+/-
157.75
+/-
191.75
+/-
362.50
+/-
262.75
+/-
594.00
+/-
533.25
+/-
279.50
+/-
567.25
+/-
347.06
+/-
703.93
+/-
1485.0
+/+
ThunderboltTM 4 out for daisy chain
OSD Display Info: Link rate(current)
Maximum external monitor resolution that can be supported 5120 x 2160 at 120 Hz
NOTE: The Maximum resolution of 5120 x 2160 at 120Hz can only be produced with ThunderboltTM DP-ALT 1.4 DSC, DP 1.4 DSC, or HDMI 2.1 video source.
About your monitor | 21
Electrical specifications
Video input signals
Input voltage/ frequency/current
· Digital video signal for each differential line Per differential line at 100
ohm impedance
· DP/HDMI/ThunderboltTM 4 (140 W) signal input support 100-240 VAC/50 Hz or 60
Hz ± 3 Hz/4.2 A (typical)
Inrush current Power consumption
120 V: 42 A (Max.)
240 V: 80 A (Max.)
Inrush current is measured at an ambient temperature of 0°C. 0.3 W (Off Mode)1
0.4 W (Standby Mode)1 1.8 W (Networked standby Mode)1
39.5 W (On Mode)1 380 W (Max)2 45 W (Pon)3 153.6 kWh (TEC)3
1 As defined in EU 2019/2021 and EU 2019/2013. 2 Max brightness and contrast setting with maximum power loading on all USB ports. 3 Pon: Power consumption of On Mode as defined in Energy Star 8.0 version. TEC: Total energy consumption in kWh as defined in Energy star 8.0 version.
This document is informational only and reflects laboratory performance. Your product may perform differently, depending on the software, components, and peripherals you ordered and shall have no obligation to update such information. Accordingly, the customer should not rely upon this information in making decisions about electrical tolerances or otherwise. No warranty as to accuracy or completeness is expressed or implied.
NOTE: This monitor is ENERGY STAR certified.
This product qualifies for ENERGY STAR in the factory default settings which can be restored by “Factory Reset” function in the OSD menu. Changing the factory default settings or enabling other features may increase power consumption that could exceed the ENERGY STAR specified limit.
22 | About your monitor
Speaker specifications
Speaker rated power Frequency response Impedance
2 x 9 W 100 Hz – 20 kHz 8 ohm
Physical characteristics
Connector type
· DP connector (in)
· HDMI connector · ThunderboltTM 4 upstream connector · ThunderboltTM 4
downstream connector · USB Type-C® upstream connector
· Audio line-out
· RJ45 connector · USB Type-C® downstream connector x 2
(Port with icon supports 5 V/3 A) · SuperSpeed USB Type-A 3.2 Gen2 downstream port x 5
(Port with
battery icon supports BC 1.2.)
(Port with
icon supports Menu Voice function.)
Signal cable type
· DP to DP cable (cable length – 1.8 M)
· HDMI cable (cable length – 1.8 M)
· USB Type-A to USB Type-C Gen2 cable
(cable length – 1 M) · ThunderboltTM 4 Active cable (cable length – 1.5 M)
Dimensions (with stand)
Height (extended)
622.32 mm (24.50 in.)
Height (compressed) 472.32 mm (18.60 in.)
Width
946.62 mm (37.27 in.)
Depth
252.80 mm (9.95 in.)
Dimensions (without stand)
Height
419.14 mm (16.50 in.)
Width
946.62 mm (37.27 in.)
Depth
108.04 mm (4.25 in.)
Stand dimensions
About your monitor | 23
Height (extended)
Height (compressed)
Width
Depth
Weight
Weight with packaging
Weight with stand assembly and cables Weight without stand assembly (For wall
mount or VESA mount considerations – no cables) Weight of stand assembly
483.30 mm (19.03 in.) 436.50 mm (17.19 in.) 391.50 mm (15.37 in.) 252.80 mm
(9.95 in.)
19.02 kg (41.93 lb) 12.22 kg (26.94 lb) 8.35 kg (18.41 lb)
3.38 kg (7.45 lb)
24 | About your monitor
Environmental characteristics
Compliant Standards
· ENERGY STAR certified Monitor.
· EPEAT registered where applicable. EPEAT registration varies by country. See https://www.epeat.net for registration status by country.
· TCO Certified & TCO Certified Edge.
· RoHS Compliant.
· BFR/PVC Free monitor (excluding external cables).
· Meets NFPA 99 leakage current requirements.
· Arsenic-Free glass and Mercury-Free for the panel only.
Temperature
Operating
0°C to 40°C (32°F to 104°F)
Non-operating
20°C to 60°C (4°F to 140°F)
Humidity
Operating
10% to 80% (non-condensing)
Non-operating
5% to 90% (non-condensing)
Altitude
Operating
5,000 m (16,404 ft) (maximum)
Non-operating
12,192 m (40,000 ft) (maximum)
Thermal dissipation
1296.6 BTU/hour (maximum)
134.8 BTU/hour (On Mode)
About your monitor | 25
Monitor resolution for daisy chain setup
Host Capability
Cable type used on Maximum
ThunderboltTM 4 resolution for
upstream port
primary monitor
Cable type used on Maximum resolution ThunderboltTM 4 for Secondary downstream port monitor
TBT4 (Alt Mode DP 1.4 DSC enabled)
ThunderboltTM 4 Active cable
5120 x 2160 @ 120 Hz
ThunderboltTM 4 Active cable
5120 x 2160 @ 120 Hz
TBT3 (Alt ThunderboltTM 4 Mode DP 1.2 ) Active cable
5120 x 2160 @ 30 Hz
ThunderboltTM 4 Active cable
5120 x 2160 @ 30 Hz
TBT4 (Alt Mode DP 1.4 DSC enabled)
ThunderboltTM 4 Active cable
5120 x 2160 @ 120 Hz USB Type C-C Cable 5120 x 2160 @ 120 Hz
TBT3 (Alt ThunderboltTM 4 Mode DP 1.2 ) Active cable
5120 x 2160 @ 30 Hz USB Type C-C Cable 5120 x 2160 @ 30 Hz
TBT4 (Alt Mode DP 1.4 USB Type C-C Cable 5120 x 2160 @ 120 Hz NA DSC enabled)
Not supported
TBT3 (Alt Mode DP 1.2
)
USB
Type
C-C
Cable
5120 x 2160 @ 30 Hz
NA
Not supported
USB-C (Alt Mode DP 1.4 DSC enabled)
ThunderboltTM 4 Active cable
5120 x 2160 @ 120 Hz NA
Not supported
USB-C (Alt ThunderboltTM 4 Mode DP 1.2 ) Active cable
5120 x 2160 @ 30 Hz NA
Not supported
USB-C (Alt Mode DP 1.4 USB Type C-C Cable 5120 x 2160 @ 120 Hz NA DSC enabled)
Not supported
USB-C (Alt Mode DP 1.2
)
USB
Type
C-C
Cable
5120 x 2160 @ 30 Hz
NA
Not supported
NOTE: Monitor daisy chain only via ThunderboltTM port.
NOTE: Set the OSD for “Thunderbolt Daisy Chain” to “Optimized” to get 5120
x2160 @120Hz on both the monitors.
NOTE: If TBT out cannot display, please refer to Troubleshooting TBT out
cannot display.
26 | About your monitor
ThunderboltTM video resolution
Host Capability
Maximum Resolution
TBT4 (Alt Mode DP 1.4 DSC enabled) 5120 x 2160 @ 120 Hz
TBT4 (Alt Mode DP 1.4 )
5120 x 2160 @ 60 Hz
TBT3 (Alt Mode DP 1.2 )
5120 x 2160 @ 30 Hz
USB-C (Alt Mode DP 1.4 DSC enabled) 5120 x 2160 @ 120 Hz
USB-C (Alt Mode DP 1.4 )
5120 x 2160 @ 60 Hz
USB-C (Alt Mode DP 1.2 )
5120 x 2160 @ 30 Hz
HDMI video resolution
Host Capability HDMI 1.4 HDMI 2.0 HDMI 2.1
Maximum Resolution 3840 x 2160 @ 30 Hz 5120 x 2160 @ 30 Hz/4096 x 2160 @ 60 Hz 5120 x 2160 @ 120 Hz
DP video resolution
Host Capability 8.1G 4-Lane DSC 8.1G 4-Lane 5.4G 4-Lane DSC 5.4G 4-Lane
Maximum Resolution 5120 x 2160 @ 120 Hz 5120 x 2160 @ 60 Hz 5120 x 2160 @ 120 Hz 5120 x 2160 @ 60 Hz
About your monitor | 27
Pin assignments DP port (in)
Pin number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
20-pin side of the connected signal cable ML3(n) GND ML3(p) ML2(n) GND ML2(p) ML1(n) GND ML1(p) ML0(n) GND ML0(p) CONFIG1 CONFIG2 AUX CH (p) GND AUX CH (n) Hot Plug Detect Return DP_PWR
28 | About your monitor
HDMI port
Pin number 19-pin side of the connected signal cable
1
TMDS DATA 2+
2
TMDS DATA 2 SHIELD
3
TMDS DATA 2-
4
TMDS DATA 1+
5
TMDS DATA 1 SHIELD
6
TMDS DATA 1-
7
TMDS DATA 0+
8
TMDS DATA 0 SHIELD
9
TMDS DATA 0-
10
TMDS CLOCK+
11
TMDS CLOCK SHIELD
12
TMDS CLOCK-
13
CEC
14
Reserved (N.C. on device)
15
DDC CLOCK (SCL)
16
DDC DATA (SDA)
17
DDC/CEC Ground
18
+5 V POWER
19
HOT PLUG DETECT
About your monitor | 29
ThunderboltTM 4/USB Type-C® port
Pin
Signal
A1
GND
A2
SSTXp1
A3
SSTXn1
A4
VBUS
A5
CC1
A6
Dp1
A7
Dn1
A8
SBU1
A9
VBUS
A10
SSRXn2
A11
SSRXp2
A12
GND
Pin
Signal
B12
GND
B11
SSRXp1
B10
SSRXn1
B9
VBUS
B8
SBU2
B7
Dn1
B6
Dp1
B5
CC2
B4
VBUS
B3
SSTXn2
B2
SSTXp2
B1
GND
30 | About your monitor
Universal Serial Bus (USB)
This section gives you information about the USB ports available on your
monitor.
NOTE: Up to 5 V/1.5 A typical (2 A max) on USB-A downstream port (port with
battery icon) with BC 1.2 compliance devices; up to 0.9 A on the other five
USB-A downstream ports; Up to 3 A on USB-C® downstream port (port with icon)
with 5 V/3 A compliance devices. Your computer has the following USB ports:
· Two upstream – 1TBT + 1USB-C® at rear.
· Eight downstream – 2USB-C® + 1USB-A at bottom, 1TBT + 4USB-A at rear.
Power Charging Port – the ports with battery icon supports fast current
charging capability if the device is BC 1.2 compatible. The USB Type-C®
downstream port with icon supports fast current charging capability if the
device is 5 V/3 A compatible.
NOTE: The monitor’s USB ports work only when the monitor is on or in Standby
Mode. On in Standby Mode, if the USB cable (A to C or C to C) is plugged in,
the USB ports can work normally. Otherwise, follow the OSD setting of Other
USB Charging, if the setting is “On in Standby Mode” then USB work normally,
otherwise USB is disabled. If you turn off the monitor and then turn it on,
the attached peripherals may take a few seconds to resume normal
functionality.
SuperSpeed USB 10 Gbps (USB 3.2 Gen2) device
Transfer speed SuperSpeed+ SuperSpeed High speed Full speed
Data rate 10 Gbps 5 Gbps 480 Mbps 12 Mbps
Maximum power consumption (each port) 4.5 W 4.5 W 2.5 W 2.5 W
About your monitor | 31
USB 3.2 Gen2 (10 Gbps) downstream port (bottom)
9 8 7 65
1
23 4
Pin number 1 2 3 4 5 6 7 8 9 Shell
Signal name VBUS DD+ GND StdA_SSRXStdA_SSRX+ GND_DRAIN StdA_SSTXStdA_SSTX+ Shield
USB 3.2 Gen2 (10 Gbps) downstream port (rear)
Pin number 1 2 3 4 5 6 7 8 9 Shell
Signal name VBUS DD+ GND StdA_SSRXStdA_SSRX+ GND_DRAIN StdA_SSTXStdA_SSTX+ Shield
32 | About your monitor
RJ45 port (connector side)
Pin No.
1 2 3 4 5 6 7 8
10BASE-T 100BASE-T Transmit+ TransmitReceive+ Unused Unused ReceiveUnused Unused
1000BASE-T
BI_DA+ BI_DABI_DB+ BI_DC+ BI_DCBI_DBBI_DD+ BI_DD-
Driver installation
Install the Realtek USB GBE Ethernet Controller Driver available for your
system. This is available for download at https://www.dell.com/support under
the “Driver and download” section.
Network (RJ45) data rate through USB-C® max speed is 2.5 Gbps.
About your monitor | 33
Wake-on-LAN behavior Computer power save state Modern Standby (S0ix)
Standby/Sleep (S3) Hibernate (S4) OFF/Shutdown (S5)
System behavior after receiving Wake-onLAN (WOL) command
The computer and Monitor remain in Standby mode but the network communication
is enabled.
Both computer and monitor are turned on.
Both computer and monitor are turned on.
Both computer and monitor are turned on.
NOTE: The computer BIOS must be configured to enable WOL function first.
NOTE: This LAN port is 2.5GBase-T IEEE 802.3az compliant, supporting Mac
Address (Printed on model label) Pass-thru (MAPT), Wake-on-LAN (WOL) from
standby mode (S3) and UEFI PXE Boot function [UEFI PXE Boot is not supported
on Dell Desktop PC’s (except for OptiPlex 7090/3090 Ultra Desktop)], these 3
features depend on BIOS settings and operating system versions. The
functionality may vary with non-Dell PCs.
UEFI stands for Unified Extensible Firmware Interface.
NOTE: WOL S4 and WOL S5 are only capable with Dell Systems that support DPBS
and are with ThunderboltTM/USB-C® (MFDP) interface connection.
NOTE: Any issue that is related to WOL, users should debug the computer
without a monitor. After the problem is solved, then connect to the monitor.
34 | About your monitor
RJ45 Connector LED status:
Right LED Left LED
LED Right LED
Left LED
Color
Description
Amber or Green Speed indicator: · Amber On – 1000 Mbps/2.5 Gbps · Green On – 100 Mbps · Off – 10 Mbps
Green
Link/Activity indicator: · Blinking – Activity on the port.
· Green On – Link is being established.
· Off – Link is not established.
NOTE: RJ45 cable is not a standard in-box accessory.
About your monitor | 35
Plug-and-Play capability
You can connect the monitor to any Plug and Play-compatible system. The
monitor automatically provides the computer with its Extended Display
Identification Data (EDID) using Display Data Channel (DOC) protocols so that
the computer can configure itself and optimize the monitor settings. Most
monitor installations are automatic; you can select different settings as
required. For more information about changing the monitor settings, see
Operating the Monitor.
LCD monitor quality and pixel policy
During the LCD Monitor manufacturing process, it is not uncommon for one or
more pixels to become fixed in an unchanging state which are hard to see and
do not affect the display quality or usability. For more information on Dell
Monitor Quality and Pixel Policy, see https://www.dell.com/pixelguidelines.
36 | About your monitor
Ergonomics
CAUTION: Improper or prolonged usage of keyboard may result in injury.
CAUTION: Viewing the monitor screen for extended periods of time may result in
eye strain. For comfort and efficiency, observe the following guidelines when
setting up and using your computer workstation: · Position your computer so
that the monitor and keyboard are directly in front of
you as you work. Special shelves are commercially available to help you
correctly position your keyboard. · To reduce the risk of eye strain and
neck/arm/back/shoulder pain from using the monitor for long periods of time,
we suggest you to: 1. Set the distance of the screen between 20 in. to 28 in.
(50 – 70 cm) from your
eyes. 2. Blink frequently to moisten your eyes or wet your eyes with water
after
prolonged usage of the monitor. 3. Take regular and frequent breaks for 20
minutes every two hours. 4. Look away from your monitor and gaze at a distant
object at 20 ft away for at
least 20 seconds during the breaks. 5. Perform stretches to relieve tension in
the neck, arm, back, and shoulders
during the breaks. · Make sure that the monitor screen is at eye level or
slightly lower when you are
sitting in front of the monitor. · Adjust the tilt of the monitor, its
contrast, and brightness settings. · Adjust the ambient lighting around you
(such as overhead lights, desk lamps, and
the curtains or blinds on nearby windows) to minimize reflections and glare on
the monitor screen. · Use a chair that provides good lower-back support. ·
Keep your forearms horizontal with your wrists in a neutral, comfortable
position while using the keyboard or mouse. · Always leave space to rest your
hands while using the keyboard or mouse. · Let your upper arms rest naturally
on both sides. · Ensure that your feet are resting flat on the floor. · When
sitting, make sure that the weight of your legs is on your feet and not on the
front portion of your seat. Adjust your chair’s height or use a footrest if
necessary to maintain a proper posture. · Vary your work activities. Try to
organize your work so that you do not have to sit and work for extended
periods of time. Try to stand or get up and walk around at regular intervals.
About your monitor | 37
· Keep the area under your desk clear of obstructions and cables or power
cords that may interfere with comfortable seating or present a potential trip
hazard.
Monitor screen at or below eye level
Wrists relaxed and flat
Monitor and keyboard positioned directly in front of the user
Feet flat on the floor
Handling and moving your display
To ensure the monitor is handled safely when lifting or moving it, follow the
guidelines mentioned below:
· Before moving or lifting the monitor, turn off your computer and the
monitor. · Disconnect all cables from the monitor. · Place the monitor in the
original box with the original packing materials. · Hold the bottom edge and
the side of the monitor firmly without applying
excessive pressure when lifting or moving the monitor.
38 | About your monitor
· When lifting or moving the monitor, ensure the screen is facing away from
you and do not press on the display area to avoid any scratches or damage.
· When transporting the monitor, avoid any sudden shock or vibration to it. ·
When lifting or moving the monitor, do not turn the monitor upside down while
holding the stand base or stand riser. This may result in accidental damage to
the monitor or cause personal injury.
About your monitor | 39
Maintenance guidelines
Cleaning your monitor
CAUTION: Read and follow the Safety instructions before cleaning the monitor.
WARNING: Before cleaning the monitor, unplug the monitor power cable from the
electrical outlet. For best practices, follow the instructions in the list
below when unpacking, cleaning, or handling your monitor: · Use a clean cloth
that is slightly dampened with water to clean the stand
assembly, the screen, and the chassis of your Dell monitor. If available, use
a screen-cleaning tissue or solution suitable for cleaning Dell monitors. ·
After cleaning the surface of the table, ensure that it is thoroughly dry and
free from any moisture or cleaning agent before placing your Dell monitor on
it. CAUTION: Do not use detergents or other chemicals such as benzene,
thinner, ammonia, abrasive cleaners, alcohol, or compressed air. CAUTION:
Using chemicals for cleaning may cause changes in the appearance of the
monitor, such as color fading, milky film on the monitor, deformation, uneven
dark shade, and peeling of screen area. WARNING: Do not spray the cleaning
solution or even water directly on the surface of the monitor. Doing so allows
liquids to accumulate at the bottom of the display panel and corrode the
electronics resulting in permanent damage. Instead, apply the cleaning
solution or water to a soft cloth and then clean the monitor. NOTE: Monitor
damages due to improper cleaning methods and the use of benzene, thinner,
ammonia, abrasive cleaners, alcohol, compressed air, detergent of any kind
will lead to a Customer Induced Damage (CID). CID is not covered under the
standard Dell warranty. · If you notice white residual powder when you unpack
your monitor, wipe it off with a cloth. · Handle your monitor with care as a
darker-colored monitor may get scratched and show white scuff marks more than
a lighter-colored monitor. · To help maintain the best image quality on your
monitor, use a dynamically changing screen saver and turn off your monitor
when not in use.
40 | About your monitor
Setting up the monitor
Attaching the stand
NOTE: The stand is not installed at the factory when shipped. NOTE: The
following instructions are applicable only for the stand that was shipped with
your monitor. If you are attaching a stand that you purchased from any other
source, follow the setup instructions that were included with the stand.
To attach the monitor stand: 1. Align and place the stand riser on the stand
base. 2. Open the screw handle at the bottom of the stand base and turn it
clockwise to
secure the stand assembly. 3. Close the screw handle.
1
2
3
Setting up the monitor
4. Open the protective cover on the monitor to access the VESA slot on the
monitor.
5. Slide the tabs on the stand riser into the slots on the display back cover
and lower the stand assembly to snap it into place.
42 | Setting up the monitor
6. Hold the stand riser and lift the monitor carefully, then place it on a
flat surface.
NOTE: Hold the stand riser firmly when lifting the monitor to avoid any
accidental damage. 7. Tear the paper cushion from the monitor.
Setting up the monitor | 43
Using the tilt, swivel, and vertical extension
NOTE: The following instructions are applicable only for the stand that was
shipped with your monitor. If you are connecting a stand that you purchased
from any other source, follow the setup instructions that were included with
the stand.
Tilt, swivel, and vertical extension
With the stand that is attached to the monitor, you can tilt the monitor for
the most comfortable viewing angle.
5°
30°
150 mm
30°
21°
NOTE: The stand is detached when the monitor is shipped from the factory.
Organizing your cables
After attaching all necessary cables to your monitor and computer, (see
Connecting Your Monitor for cable attachment) organize all cables as shown
above. If your cable is not able to reach your PC, you may connect directly to
the PC without routing through the slot on the monitor stand.
44 | Setting up the monitor
Connecting your monitor
WARNING: Before you begin any of the procedures in this section, follow the
Safety Instructions. NOTE: Dell monitors are designed to work optimally with
the Dell supplied cables inside the box. Dell does not guarantee the video
quality and performance if non-Dell cables are used. NOTE: Route the cables
through the cable-management slot before connecting them. NOTE: Do not connect
all the cables to the computer simultaneously. NOTE: The images are for the
purpose of illustration only. The appearance of the computer may vary. To
connect your monitor to the computer: 1. Turn off your computer. 2. Connect
the DisplayPort or USB cable, and the ThunderboltTM 4 cable from your
monitor to the computer. CAUTION: Before using the monitor, it is recommended
to fasten the stand riser to a wall using cable tie or a cord that can support
the weight of monitor in order to prevent the monitor from falling.
cable tie or a cord
3. Turn on your monitor. 4. Select the correct input source from the OSD Menu
on your monitor and then
turn on your computer. NOTE: U4025QW default setting is DisplayPort 1.4. A
DisplayPort 1.4 Graphic card may not display normally. See product specific
problems No image when using DP connection to the PC to change the default
setting. NOTE: Remove the rubber plug when using ThunderboltTM 4 downstream or
USB-C® upstream connector.
Setting up the monitor | 45
Connecting the HDMI cable
Switch to lower or higher primary resolution
1. Press the joystick button to launch the OSD main menu. 2. Move the
joystick to select input source.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
Thunderbolt (140W) DP HDMI Rename Inputs Auto Select Options for Thunderbolt Options for DP/HDMI Reset Input Source
Thunderbolt (140W) On Prompt for Multiple Inputs Prompt for Multiple Inputs
Exit
3. Move the joystick up or down to select HDMI, press and hold the joystick 8
seconds, the following message will appears:
Switch to lower primary resolution for HDMI?
Yes No
46 | Setting up the monitor
4. Select Yes to switch from HDMI 2.1 EDID and max resolution is 5K to HDMI
1.4 and max resolution is 4K (or select No to cancel this operation).
5. Repeat steps 3 and 4 again to switch from HDMI 1.4 and max resolution is
4K to HDMI 2.1 EDID and max resolution is 5K.
Switch to higher primary resolution for HDMI? Yes No
Connecting the DP cable
Connecting the ThunderboltTM 4 cable
ThunderboltTM 4 upstream
ThunderboltTM 4
Setting up the monitor | 47
Connecting the USB-C® Cable (A to C)
Connecting the USB Type-C® cable (C to C) (Optional)
NOTE: This connection only data is available and no video. Need another video connection for display. NOTE: Regardless of the power requirement/actual power consumption of your laptop, or the remaining power runtime in your battery, the Dell monitor is designed to supply power delivery of up to 140 W to your laptop.
Rated power (on laptops that have USB
Maximum charging power
Type-C® with Power Delivery)
45 W
45 W
90 W
90 W
140 W
*140 W
*Need laptops to support EPR 140 W charging.
WARNING: The Dell UltraSharp U4025QW supports the USB Type-C® Power Delivery 3.1 (ThunderboltTM 4) specification and can provide a
48 | Setting up the monitor
maximum output of up to 140 W. For safety consideration, this USB
Type-C® port must be connected to the Dell-approved products with the inbox
ThunderboltTM 4 Active cable. For the list of Dell-approved products,
refer Dell products compatible with USB Type-C® Power Delivery 3.1 (Extended
Power Range 140W) Tech sheet at Dell.com/support/ U4025QW.
Connecting the monitor for ThunderboltTM 4 daisy chain function
ThunderboltTM 4 upstream
ThunderboltTM 4 downstream
ThunderboltTM 4 upstream
NOTE: Only support two monitors through ThunderboltTM 4 daisy chain. See
product specific problems No image when using ThunderboltTM 4 daisy chain.
NOTE: Use the OSD menu to set Thunderbolt Daisy Chain option to Optimized. So
that both monitors can display 5120 x 2160 120Hz mode.
UltraSharp 40 Monitor
Brightness/Contrast Input Source
Aspect Ratio Sharpness
Color Display
Response Time Uniformity Compensation
PIP/PBP USB
Smart HDR Thunderbolt Daisy Chain
Optimized
Audio
Dell Power Button Sync
Standard
Menu
Reset Display
Personalize
Others
More Information Exit
Setting up the monitor | 49
Connecting the monitor for RJ45 Cable (Optional)
ThunderboltTM 4 upstream
50 | Setting up the monitor
Dell Power Button Sync (DPBS)
Your monitor is designed with a Dell Power Button Sync (DPBS) feature to allow
you to control PC system power state from the monitor power button. This
feature is only supported with the Dell platform which has a built-in DPBS
function, and is only supported over ThunderboltTM 4 interface.
ThunderboltTM 4 upstream
ThunderboltTM 4 USB Type-C
To make sure the DPBS function works for the first time, perform the following
steps on the DPBS supported platform in the Control Panel first.
NOTE: DPBS only supports the ThunderboltTM 4 port. 1. Go to the Control Panel.
2. Select Hardware and Sound, followed by Power Options.
Setting up the monitor | 51
3. Go to the System Settings.
4. In the When I press the power button drop-down list, you can select Sleep,
Hibernate, or Shut down.
NOTE: Do not select Do nothing, otherwise monitor power button cannot sync
with PC system power state. 52 | Setting up the monitor
5. Go to Monitor OSD Display, turn On from off in Dell Power Button Sync.
UltraSharp 40 Monitor
Brightness/Contrast
Aspect Ratio
Input Source
Sharpness
Color
Response Time
Display
Uniformity Compensation
PIP/PBP
Smart HDR
USB Audio
Thunderbolt Daisy Chain
Dell Power Button Sync
On
Menu
Reset Display
Off
Personalize
Others
More Information Exit
Setting up the monitor | 53
Connecting the monitor for DPBS for the first time
ThunderboltTM 4 upstream
Initial monitor power state(OFF)
Initial system power state(OFF)
ThunderboltTM 4
For the first time DPBS fuction setup, follow the below steps: 1. Ensure both
the PC and monitor are off. 2. Connect the ThunderboltTM 4 cable from the PC
to the monitor. 3. Press the monitor power button to turn ON the monitor. 4.
Both the monitor and PC turn normally. If not, press either the monitor power
button or PC power button to boot the system. 5. When you connect the Dell
OptiPlex 7090/3090 Ultra platform, you may see both
the monitor and the PC turn on momentarily. Wait for a while (approximately 6
seconds) and both the PC and monitor will turn OFF. When you press either the
monitor power button or PC power button, both the PC and monitor turn on. The
PC system power state is synchronized with the monitor power button. NOTE:
When the monitor and PC are both at power OFF state at first time, it is
recommended that you turn ON the monitor first, then connect the ThunderboltTM
4 cable from the PC to the monitor. NOTE: You can power the Dell PC Ultra
platform using its DC adapter jack. Alternatively, you can power the Dell PC
Ultra platform using the monitor’s ThunderboltTM 4 cable over Power Delivery
(PD); Set ThunderboltTM 4 charging to on from off mode. * Ensure to check the
Dell PC for DPBS supportability.
54 | Setting up the monitor
Using DPBS function
When you press the monitor power button or PC power button, the Monitor/PC
state is as follows:
1
ThunderboltTM 4 upstream
Initial monitor power state (ON)
2
New Power state of monitor (OFF)
Initial system power state (ON)
ThunderboltTM 4
Press PC/Monitor power button
New Power state of system (OFF)
ThunderboltTM 4
ThunderboltTM 4
1
upstream
Initial monitor power state (OFF)
2
New Power state of monitor (ON)
Initial system power state (OFF)
ThunderboltTM 4
Press PC/Monitor power button
New Power state of system (ON)
ThunderboltTM 4
When the monitor and PC power state are both ON, while you press and hold the power button for 4 seconds, the screen prompts if you would like to shut down the PC.
Press and hold 4s
ThunderboltTM 4
PC will shut down
Slide to shut down your PC
Setting up the monitor | 55
When the monitor and PC power state are both ON, while you press and hold the monitor power button for 10 seconds, the PC shuts down.
Press and hold 10s
ThunderboltTM 4
PC will shut down
56 | Setting up the monitor
Connecting the monitor for ThunderboltTM daisy chain function
A PC is connected to two monitors in an initially off power state, and the PC power state is synchronized with the Monitor 1 power button. When you press the Monitor 1 or PC power button, both the Monitor 1 and PC turn on. Meanwhile the Monitor 2 will remain off. You need to manually press the power button on Monitor 2 to turn it on.
ThunderboltTM 4 upstream
ThunderboltTM 4 downstream
ThunderboltTM 4 upstream
System power state (ON)
Monitor 2
Monitor 1
Similarly, a PC is connected to two monitors in an initially on power state,
and the PC system power state is synchronized with the Monitor 1 power button.
When you press the Monitor 1 or PC power button, both the Monitor 1 and PC
turn off. Meanwhile the Monitor 2 will be in Standby mode. You need to
manually press the power button on
Monitor 2 to turn it off.
ThunderboltTM 4 upstream
ThunderboltTM 4 downstream
ThunderboltTM 4 upstream
Going into Standby mode…
Monitor 2
Monitor 1
System power state (ON)
Setting up the monitor | 57
Connect multiple ThunderboltTM 4 monitors to one system The Dell PC Ultra
platform has two ThunderboltTM 4 ports, so both Monitor 1 and Monitor 2 power
states can synchronize with the PC. While the PC and two monitors are in an
initially ON power state, by pressing the power button on Monitor 1 or Monitor
2 will turn OFF the PC, Monitor 1, and Monitor 2. Ensure to check the Dell
PC for DPBS supportability.
NOTE: DPBS only supports the ThunderboltTM 4 port.
ThunderboltTM 4 upstream
System power state (ON)
ThunderboltTM 4 port 1
ThunderboltTM 4 port 2
Monitor 1
ThunderboltTM 4 upstream
Monitor 2
Pressing power button on Monitor 1 or 2
System power state (OFF)
ThunderboltTM 4 port 1
ThunderboltTM 4 port 2
Monitor 1 Monitor 2
ThunderboltTM 4 upstream
ThunderboltTM 4 upstream
58 | Setting up the monitor
Make sure to set ThunderboltTM 4 to On in Off Mode. While the PC and two
monitors are in an initially OFF power state, by pressing the power button on
Monitor 1 or Monitor 2 will turn ON the PC, Monitor 1, and Monitor 2.
ThunderboltTM 4 upstream
System power state (OFF)
ThunderboltTM 4 port 1
ThunderboltTM 4 port 2
Monitor 1
ThunderboltTM 4 upstream
Monitor 2
Pressing power button on Monitor 1 or 2
System power state (ON)
ThunderboltTM 4 port 1
ThunderboltTM 4 port 2
Monitor 1 Monitor 2
ThunderboltTM 4 upstream
ThunderboltTM 4 upstream
Setting up the monitor | 59
Securing your monitor using Kensington lock (optional)
The security lock slot is located at the bottom of the monitor (see Security
lock slot). Secure your monitor to a table using the Kensington security lock.
For more information on using the Kensington lock (purchased separately), see
the documentation that is shipped with the lock.
NOTE: The image is for the purpose of illustration only. The appearance of the
lock may vary.
60 | Setting up the monitor
Removing the monitor stand
NOTE: To prevent scratches on the LCD screen when removing the stand, ensure
that the monitor is placed on a soft surface and handle it carefully. NOTE:
The following steps are specific for removing the stand that is shipped with
your monitor. If you are removing a stand that you purchased from any other
source, follow the setup instructions that are included with the stand. To
remove the stand: CAUTION: Place the monitor screen on the desktop. Take note
that the webcam is slightly protruded out of the monitor screen, please
protect the webcam surface to prevent wear by the desktop. 1. Place the
monitor on a soft cloth or cushion. 2. Press and hold the stand-release
button. 3. Lift the stand up and away from the monitor.
3 2
Setting up the monitor | 61
Wall mounting (Optional)
NOTE: Use M4 x 10 mm screws to connect the monitor to the wallmounting kit.
See the instructions that come with the VESA-compatible wall mounting kit. 1.
Place the monitor on a soft cloth or cushion on a stable flat table. 2. Remove
the stand. 3. Use a Phillips crosshead screwdriver to remove the four screws
securing the plastic cover. 4. Attach the mounting bracket from the wall
mounting kit to the monitor. 5. Mount the monitor on the wall as instructed in
the documentation that shipped with the wall-mounting kit. NOTE: For use only
with UL or CSA or GS-listed wall mount bracket with minimum weight/load
bearing capacity of 33.40 kg (73.63 lb).
62 | Setting up the monitor
Operating the monitor
Power on the monitor
Press the button to turn on the monitor.
Using the joystick control
To modify the OSD adjustments using the joystick control on the rear end of
the monitor, do the following:
1. Press the joystick to open the OSD Menu Launcher. 2. Move the joystick
up/down/left/right to switch between the OSD menu options. Joystick Functions
Joystick Description
Press the joystick to open the OSD Menu Launcher. For right and left
navigation. For up and down navigation.
Operating the monitor
Enable Menu Voice function
This is an accessibility feature for people who are visually impaired. This
feature can also be disabled in the Main Menu.
1. Power on the monitor by pressing the power button. 2. Connect the Dell
Monitor Text to Speech User Interface Module-TS23
to the USB port marked CVAA at the back of the monitor. Upon successful
connection to the correct USB port, you will receive an audio feedback saying
CVAA connected. 3. Utilize the joystick to activate the On-Screen Display
(OSD) menu.
NOTE: After setting up, you may press and hold the Joystick for 3 seconds to
deactivate or reactivate the Menu Voice. NOTE: The following functions are
disabled when Menu Voice is on: – Menu Lock – Language – PIP/PBP For
additional information, go to: https://www.dell.com/learn/us/en/uscorp1
/policies-website-accessibility. Compliant with the 21st Century
Communications and Video Accessibility Act (CVAA).
64 | Operating the monitor
Using the rear-panel controls
Press the Joystick to open the OSD Menu Launcher.
A
Preset Modes
Menu Launcher
· Toggle the Joystick Up to open the Main Menu. · Toggle the Joystick Left or Right to select the preferred Shortcut keys. · Toggle the Joystick Down to Exit.
Menu Launcher details The following table describes the Menu Launcher icons:
Options
Description
Use this Menu button to launch the on-screen display (OSD) and select the OSD
menu.
Menu
Shortcut key: Display Info
Shortcut key: Input Source
Shortcut key: Preset Modes
Shortcut key: Brightness/Contrast
Use this button to choose from a list of Display Info.
Use this button to choose from a list of Input Source.
Allows to choose from a list of Preset color modes.
To directly access the Brightness/Contrast adjustment sliders.
Operating the monitor | 65
Options
A
Shortcut key: Auto Brightness
Exit
Description Use this button to enable the Ambient Light Sensor to auto-adjust
the luminance setting.
Use this button to go back to the main menu or exit the OSD main menu.
Front-panel button Use the buttons on the front of the monitor to adjust the image settings.
Front Panel 1
Description
Use the Up (increase) and Down (decrease) buttons to adjust items in the OSD
menu.
Up
Down
2
Use the Previous button to go back to the previous
menu.
Previous
3
Use the Next button to confirm your selection.
Next
4
Use the Tick button to confirm your selection.
Tick
66 | Operating the monitor
Using the Main Menu
Icon Menu and Submenus
Brightness/ Contrast
Description
Adjust the Brightness, Contrast, Auto Brightness, Auto Brightness Range Level,
Auto Color Temp., and Primary Monitor for Sync functions.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display
Brightness
75
Contrast
75
Auto Brightness
Off
Auto Brightness Range Level
PIP/PBP USB
Auto Color Temp.
Off
Primary Monitor for Sync
Audio
Reset Brightness/Contrast
Menu
Personalize
Others
More Information Exit
Brightness
Contrast
Auto Brightness Auto Brightness Range Level
Adjusts the luminance of the backlight (Range: 0-100). Move the Joystick Up to
increase brightness. Move the Joystick Down to decrease brightness.
Adjust the Brightness first, and then adjust Contrast only if further
adjustment is necessary. Move the Joystick Up to increase contrast and Move
the Joystick Down to decrease contrast (Range: 0-100). The Contrast function
adjusts the degree of difference between darkness and lightness on the monitor
screen.
Enabled Ambient Light Sensor to auto-adjust the luminance setting.
It is used for selecting the upper luminance threshold of Auto Brightness
function. NOTE: When Auto Brightness is turned off, this function is not
available.
Operating the monitor | 67
Icon Menu and Submenus
Description
Auto Color Temp.
Enabled Ambient Light Sensor to auto-adjust the monitor color temperature to match to the ambient light.
Primary Monitor for Sync
When either Auto Brightness or Auto Color Temp. is turned on and multiple Dell monitors that support this function are connected through daisy chain, one of the monitors can be appointed as the Primary to synchronize the Brightness and Color setting with the other.
NOTE: When Auto Brightness and Auto Color Temp. are both turned off, this function is not available.
NOTE: If the primary or secondary monitor breaks off from the daisy chain, it also breaks off from the monitor sync.
NOTE: Use DDM software to enable this feature when daisy-chaining monitor with a ThunderboltTM port.
Reset Brightness/ Contrast
Press the joystick to reset all settings under the Brightness/Contrast menu to the factory preset values.
Input Source
Use the Input Source menu to select between different video inputs that are connected to your monitor.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
Thunderbolt (140W) DP HDMI Rename Inputs Auto Select Options for Thunderbolt Options for DP/HDMI Reset Input Source
Thunderbolt (140W) On Prompt for Multiple Inputs Prompt for Multiple Inputs
Exit
68 | Operating the monitor
Icon Menu and Submenus
Thunderbolt (140W)
Description
Select Thunderbolt (140W) input when you are using the Thunderbolt (140W)
connector. Press the joystick button to confirm the selection.
DP HDMI
Select DP input when you are using the DP (DisplayPort) connector. Press the
joystick button to confirm the selection.
Select the HDMI input when you are using the HDMI connector. Press the
joystick button to confirm the selection.
Rename Inputs Allows you to Rename Inputs.
Auto Select
Allows you to scan for available input sources. Press to select this function.
Options for Thunderbolt
Press to select these functions:
· Prompt for Multiple Inputs: Always show Switch to Thunderbolt Video Input
message for user to choose whether to switch or not.
· Always Switch: The monitor always switches to Thunderbolt video by default
while Thunderbolt is connected.
· Off: The monitor does not auto-switch to Thunderbolt video from another available input.
Options for DP/HDMI
Press to select these functions:
· Prompt for Multiple Inputs: Always show Switch to DP/HDMI Video Input
message for user to choose whether to switch or not.
· Always Switch: The monitor always switches to DP/ HDMI video by default
while DP/HDMI is connected.
Reset Input Source
· Off: The monitor does not auto-switch to DP/HDMI video from another
available input.
Resets all settings under the Input Source menu to the factory defaults. Press
to select this function.
Operating the monitor | 69
Icon Menu and Submenus
Color
Description Adjusts the color setting mode.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
Preset Modes Input Color Format Reset Color
Standard RGB
Exit
Preset Modes
When you select Preset Modes, you can choose Standard, Movie, Game, Color Temp, Color Space, or Custom Color from the list.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
Preset Modes Input Color Format Reset Color
Standard Movie Game Color Temp Color Space Custom Color
Exit
70 | Operating the monitor
Icon Menu and Submenus
Input Color Format
Description
· Standard: Default Color setting. This monitor is certified with TÜV HW LBL
at Standard color preset mode. Movie: Ideal for movies.
· Game: Ideal for most gaming applications. · Color Temp: The screen appears
warmer with a red/
yellow tint with a slider set at 5,000 K or cooler with a blue tint with
slider set at 10,000 K. · Color Space: Allows users to select the color space:
sRGB, BT.709, DCI-P3, Display P3. · Custom Color: Allows you to manually
adjust the color settings. Press the joystick left and right buttons to adjust
the Red, Green, and Blue values and create your own preset color mode.
Allow you to change the video color mode manually if the video content does
not support auto selection.
· RGB: Select this option if your monitor is connected to a computer or a
media player that supports RGB output.
· YCbCr: Select this option if your media player supports only YCbCr output.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display
Preset Modes Input Color Format Hue Saturation
RGB YCbCr
PIP/PBP USB Audio Menu
Reset Color
Personalize
Others
More Information Exit
Hue
Use Joystick Up or Down to adjust the Hue from `0′ to
`100′.
NOTE: Hue adjustment is available only for Movie and Game mode.
Operating the monitor | 71
Icon Menu and Submenus Saturation
Reset Color
Display
Description
Use Joystick Up or Down to adjust the Saturation from 0′ to100′.
NOTE: Saturation adjustment is available only for Movie and Game mode.
Resets your monitor’s color settings to the factory defaults.
Press to select this function.
Use the Display menu to adjust image.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display
Aspect Ratio Sharpness Response Time Uniformity Compensation
21:9 50 Normal Off
PIP/PBP USB
Smart HDR Thunderbolt Daisy Chain
Off Standard
Audio
Dell Power Button Sync
Menu
Reset Display
Personalize
Others
More Information Exit
Aspect Ratio Adjust the image ratio to 21:9, Auto Resize, 4:3, 1:1.
Sharpness
Makes the image look sharper or softer.
Move the joystick up and down to adjust the sharpness from 0′ to100′.
Response Time Allows you to set the Response Time to Normal or Fast.
72 | Operating the monitor
Icon
Menu and Submenus
Uniformity Compensation
Smart HDR
Description
Select screen uniformity compensation settings. Uniformity Compensation
adjusts different areas of the screen with respect to the center to achieve
uniform brightness and color over the entire screen. For optimal screen
performance, Brightness and Contrast for some preset modes (Standard, Color
Temp.) will be disabled when Uniformity Compensation is turned On. NOTE: The
user is advised to use factory default brightness setting when Uniformity
Compensation is turned on. For other brightness level settings, the uniformity
performance may deviate from the data that are shown on the Factory
Calibration Report. NOTE: Auto Brightness and Auto Color Temp are disabled
when Uniformity Compensation is turned On. NOTE: Uniformity Compensation is
disabled when HDR display content is activated.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu Personalize Others More Information
Aspect Ratio Sharpness Response Time Uniformity Compensation Smart HDR Thunderbolt Daisy Chain Dell Power Button Sync Reset Display
Desktop Movie HDR Game HDR DisplayHDR 600 Off
Exit
Press to select these functions.
Smart HDR (High Dynamic Range) automatically enhances the display output by
adjusting the settings optimally to resemble life-like visuals.
Desktop: This is the default mode. This mode is more suitable for general
usage of the monitor with a desktop computer.
Operating the monitor | 73
Icon Menu and Submenus
Thunderbolt Daisy Chain Dell Power Button Sync Reset Display
Description
Movie HDR: Use this mode during playback of HDR video content to expand the
contrast ratio, brightness, and color palette. It matches the video quality
with real life visuals.
Game HDR: Use this mode when playing games that support HDR to expand the
contrast ratio, brightness, and color palette. It makes the gaming experience
more realistic as intended by game developers.
DisplayHDR: Best used with content that complies with DisplayHDR standards.
Off: Disables Smart HDR function.
NOTE: The possible peak luminance during HDR mode is 600-nits (typical). The
actual value and duration during HDR playback might vary accordingly to the
video content.
NOTE: HDR option on both the Monitor and Computer must be enabled to activate
HDR display content. Auto Brightness and Auto Color Temp. are disabled when
Smart HDR is enabled.
Bandwidth management for operating of two daisy chained monitors up to the
maximum resolution of 5120 x 2160 120Hz. Select Optimized for dual 5120 x 2160
120Hz display. Select Standard when not in daisy chaining the Monitor or
prefer to have dual 5120 x 2160 60Hz display. NOTE: The display resolution and
refresh rate are also dependent on the computer’s graphic card capability.
To allow you to control PC system power state from the monitor power button.
Allows you to On or Off Dell Power Button Sync function. NOTE: This feature is
only supported with the Dell platform which has a built-in DPBS function, and
is only supported over Thunderbolt interface.
Resets all settings under the Display menu to the factory defaults.
Press to select this function.
74 | Operating the monitor
Icon Menu and Submenus
PIP/PBP
Description
This function brings up a window displaying an image from another input
source.
NOTE: The PBP/PIP, Screen Partition do not support HDR, and VRR/DRR.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display
PIP/PBP Mode
Off
Screen Partition (DP/TBT)
Off
PIP/PBP USB
Audio
Menu
Personalize
Others
More Information Exit
Main Window
Thunderbolt (140W) DP HDMI
Sub-Window
Thunderbolt DP (140W)
HDMI
Operating the monitor | 75
Icon Menu and
Description
Submenus
PIP/PBP Mode Adjusts the PIP or PBP (Picture by Picture) mode. You can disable this feature by selecting Off.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
PIP/PBP Mode Screen Partition (DP/TBT)
Off 50% – 50% 80% – 20% 20% – 80% 75% – 25% 25% – 75%
Exit
76 | Operating the monitor
Icon Menu and Submenus
Description
PIP/PBP (Sub) Select between the different video signals that may be connected to your monitor for the PBP sub-window. Press the button to select the PBP sub-window source signal.
NOTE: The feature is available only when the PIP/PBP mode is enabled.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
PIP/PBP Mode PIP/PBP (Sub) USB Switch Video Swap Audio Contrast (Sub) Screen Partition (DP/TBT) Screen Partition refresh rate
Thunderbolt (140W) DP HDMI
Exit
USB Switch
Select to switch between the USB upstream sources in PBP mode. Move the joystick to switch among USB upstream sources in PBP mode.
NOTE: The feature is available only when the PIP/PBP mode is enabled.
Video Swap
Select to swap videos between the main window and subwindow in PBP mode. Move the joystick to swap the main window and sub-window.
NOTE: The feature is available only when the PIP/PBP mode is enabled.
Audio
Allows you to set the audio source from the main window or the sub-window.
NOTE: The feature is available only when the PIP/PBP mode is enabled.
Contrast (Sub) Adjust the Contrast level of the picture in PBP Mode.
Move the Joystick to increase or decrease the contrast.
NOTE: The feature is available only when the PIP/PBP mode is enabled.
Operating the monitor | 77
Icon Menu and Submenus
Screen Partition (DP/ TBT)
Description
To enable dual screen and select the preferred partition ratio with one TBT/DP cable only.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
PIP/PBP Mode Screen Partition (DP/TBT)
Off 50% – 50% 80% – 20% 20% – 80% 75% – 25% 25% – 75%
Exit
Screen Partition refresh rate
Screen Partition refresh rate for 60Hz/120Hz.
NOTE: The feature is available only when the Screen partition (DP/TBT) is
enabled.
NOTE: Select 60Hz only when there is problem in setting up two partition.
UltraSharp 40 Monitor
Brightness/Contrast
PIP/PBP Mode
Input Source
PIP/PBP (Sub)
Color
USB Switch
Display
Video Swap
PIP/PBP USB
Audio Contrast (Sub)
Audio
Screen Partition (DP/TBT)
Menu Personalize
Screen Partition refresh rate
60Hz 120Hz
Others
More Information Exit
78 | Operating the monitor
Icon Menu and Submenus
USB
Description
Allow you to pair the Video input port to the USB upstream port. So that the USB downstream devices, for example, keyboard and mouse are assigned and can be used with the active video.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
DP assign to HDMI assign to Ethernet Switch Mode Ethernet Switch Show KVM Setup Guide Reset USB
USB-C USB-C Prompt when KVM switches Select
Exit
NOTE: For DP and HDMI video, connect the Computer USB-A port to Monitor USB-C
upstream port with the USB A-C cable. There is no additional USB cable needed
for ThunderboltTM video.
NOTE: To prevent data damage or loss, before changing USB upstream ports, make
sure that No USB storage devices are in use by the computer connected to the
monitor’s USB upstream port.
Operating the monitor | 79
Icon
Menu and Submenus
Ethernet Switch Mode
Ethernet Switch Show KVM Setup Guide
Reset USB
Audio
Description
Allows you to set the Ethernet switch mode: · Tie to KVM: When KVM USB
switches, Ethernet
switches together. · Prompt when KVM switches: When KVM USB
switches, a message prompts the user to decide whether to switch Ethernet
together. · Switch Manually: When KVM USB switches, Ethernet does not switch.
Manually switch Ethernet.
Select this option and follow the steps if you want to connect multiple
computers to the monitor with one set of keyboard and mouse.
Resets all settings under the USB menu to the factory defaults.
Use the Audio Settings menu to adjust the audio settings.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu Personalize Others More Information
Volume Speaker Reset Audio
75 On
Exit
Volume
Speaker Reset Audio
Allows you to increase the speaker volume.
Move the joystick up and down to adjust the volume from 0′ to100′.
Select On or Off the Speaker function.
Resets all settings under the Audio menu to the factory preset values.
80 | Operating the monitor
Icon Menu and Submenus
Menu
Description
Select this option to adjust the settings of the OSD, such as the languages of the OSD, the amount of time the menu remains on screen, and so on.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
Language Transparency Timer Lock Reset Menu
English 20 20s Disable
Exit
Language
Transparency Timer
Set the OSD display to one of eight languages.
(English, Spanish, French, German, Brazilian Portuguese, Russian, Simplified
Chinese, or Japanese).
NOTE: The function is disabled when Menu Voice is On. Select this option to
change the menu transparency by moving the Joystick up or down (Range: 0-100).
OSD Hold Time: Sets the length of time the OSD remains active after you press
a button.
Move the joystick to adjust the slider in 1-second increments, from 5-60
seconds.
Operating the monitor | 81
Icon Menu and Submenus
Lock
Description
With the control buttons on the monitor locked, you can prevent people from
accessing the controls. It also prevents accidental activation in multiple
monitors sideby-side setup.
NOTE: The function will be disabled when Menu Voice is On.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
Language Transparency Timer Lock Reset Menu
Menu Buttons Power Button Menu + Power Buttons Disable
Exit
Reset Menu
· Menu Buttons: Through OSD to lock the Menu buttons.
· Power Button: Through OSD to lock the Power button. · Menu + Power Buttons:
Through OSD to lock all Menu
and Power buttons.
· Disable: Move the Joystick left and hold for 4 seconds.
Resets all settings under the Reset Menu to the factory defaults.
Press to select this function.
82 | Operating the monitor
Icon Menu and Submenus
Personalize
Description
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
Shortcut Key 1 Shortcut Key 2 Shortcut Key 3 Shortcut Key 4 Shortcut Key 5 Power Button LED USB-C Charging (140W) Other USB Charging Reset Personalization
Display Info Input Source Preset Modes Brightness/Contrast Auto Brightness On
in On Mode Off in Off Mode Off in Standby Mode
Exit
Shortcut key 1 Select from Preset Modes, Brightness/Contrast,
Shortcut key 2 Auto Brightness, Auto Color Temp., Input Source,
Shortcut Shortcut
key 3 key 4
Aspect Ratio, Volume, Speaker, PIP/PBP Mode, USB Switch, Ethernet Switch, Video Swap, Smart HDR, Display Info, or Screen Partition and set as shortcut
Shortcut key 5 key.
Power Button Allows you to set the state of the power light to save
LED
energy.
USB-C Charging
Allows you to enable or disable USB-C Charging (140W) charging function during monitor power off mode.
(140W)
NOTE: When this function is enabled, you can charge your notebook or mobile devices through the ThunderboltTM cable even when the monitor is powered Off.
Other USB Charging
Allows you to enable or disable Other USB Charging function during monitor Standby mode.
NOTE: When this function is enabled, you can charge
your mobile devices through the USB-A, USB-C®, and
ThunderboltTM downstream port with the appropriate cable even when the monitor is in standby mode.
Reset
Resets all settings under the Personalize to the factory
Personalization defaults.
Press to select this function.
Operating the monitor | 83
Icon Menu and Submenus
Others
Description
Select this option to adjust the OSD settings such as the DDC/CI, LCD conditioning, and so on.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
DDC/CI LCD Conditioning Self-Diagnostic Menu Voice Reset Others Factory Reset
On Off Select ENERGY STAR®
Exit
DDC/CI
DDC/CI (Display Data Channel/Command Interface) allows your monitor parameters (brightness, color balance, so on.) to be adjustable over the software on your computer. You can disable this feature by selecting Off. Enable this feature for the best user experience and optimum performance of your monitor.
UltraSharp 40 Monitor
Brightness/Contrast
DDC/CI
On
Input Source
LCD Conditioning
Off
Color Display PIP/PBP USB Audio
Self-Diagnostic Menu Voice Reset Others Factory Reset
Menu
Personalize
Others
More Information Exit
84 | Operating the monitor
Icon Menu and Submenus
LCD Conditioning
Description
Helps reduce minor cases of image retention. Depending on the degree of image retention, the program may take some time to run. You can enable this feature by selecting On.
UltraSharp 40 Monitor
Brightness/Contrast
DDC/CI
Input Source
LCD Conditioning
On
Color
Self-Diagnostic
Off
Display
Menu Voice
PIP/PBP
Reset Others
USB
Factory Reset
Audio
Menu
Personalize
Others
More Information Exit
Self-Diagnostic Use this option to run the built-in diagnostics, see Built-in Diagnostics.
Menu Voice
This is an accessibility feature for people who are visually impaired. You can enable this feature by selecting On after
plug-in CVAA. See Enable Menu Voice Function.
UltraSharp 40 Monitor
Brightness/Contrast
DDC/CI
Input Source
LCD Conditioning
Color Display PIP/PBP USB Audio
Self-Diagnostic
Menu Voice
On
Reset Others
Off
Factory Reset
Menu
Personalize
Others
More Information Exit
Operating the monitor | 85
Icon Menu and Submenus Reset Others
Factory Reset
More Information
Description
Resets all settings under the Others menu to the factory defaults.
Press to select this function. Restores all preset values to the factory
default settings.
These are also the settings for ENERGY STAR® tests.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display
Display Info Dell Monitor Support
Select Select
PIP/PBP USB
Audio
Menu
Personalize
Others
More Information Exit
Display Info
Displays the monitor’s current settings. Press to select this function.
Display Info
Input Source: Resolution: Input Capability:
Stream Info: USB Upstream: Ethernet:
Thunderbolt (140W) 5120×2160,120Hz 24-bit Thunderbolt4 (140W) DP 1.4 HDMI 2.1 FRL6 (VRR, ALLM, QFT) 8.1Gbps 4-lane, DSC Thunderbolt Thunderbolt
Model: Firmware: Service Tag:
U4025QW M3T101 CN073K0
86 | Operating the monitor
Icon Menu and Submenus
Dell Monitor Support
Description
To access the general monitor support materials for your monitor, use your
smartphone to scan the QR code.
Dell Monitor Support
Scan QR Code below for general monitor support and setup guides for: – KVM
-Daisy Chain
KVM Daisy Chain
Operating the monitor | 87
Using the OSD lock function
You can lock the front-panel control buttons to prevent access to the OSD menu
and/ or power button.
Use the Lock menu to lock the buttons. 1. Select one of the following options.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
Language Transparency Timer Lock Reset Menu
2. The following message appears.
Menu Buttons Power Button Menu + Power Buttons Disable
Exit
Are you sure you want to lock the Menu Buttons? To unlock the Button, refer to
the User’s Guide.
Yes
No
3. Select Yes to lock buttons. Once locked, pressing any control button displays the lock icon .
88 | Operating the monitor
Use the Joystick to lock the buttons. Press the left directional navigation of
Joystick for four seconds, and a menu appears on the screen.
Select Option:
Select one of the following options:
Options 1
Description Select this option to lock the OSD menu function.
Menu button lock
2
Use this option to lock power button. This prevents
the user to turn off the monitor using the power
Power button lock
button.
3
Use this option to lock the OSD menu and power
button to turn off the monitor.
Menu and power button lock
Operating the monitor | 89
To unlock the buttons.
Press the left directional navigation of Joystick for four seconds until a
menu appears on the screen. The following table describes the options to
unlock the front-panel control buttons.
Select Option:
Options 1
Description Use this option to unlock OSD menu function.
Menu button unlock
2
Use this option to unlock power button to turn off
the monitor.
Power button unlock
3
Use this option to unlock the OSD menu and the
power button to turn off the monitor.
Menu and power button unlock
90 | Operating the monitor
Initial Setup When you select OSD items of Factory Reset in Other feature, the
following message appears:
Are you sure you want to reset to default settings? Yes No
When you select Yes to reset to default settings, the following message
appears:
UltraSharp 40 Monitor Select Yes’ to enable the following function(s): . Always on USB-C Charging . Other USB Charging Yes No WhenYes’ is selected, power consumption will increase. When `No’ is
selected, it will comply
with ENERGY STAR requirements. Individual settings of the functions can be
changed in the Menu. UltraSharp 40 Monitor
Would you like to switch on the Ambient Light Sensor function?
Yes No
Operating the monitor | 91
OSD warning messages When the monitor does not support a particular resolution
mode, you can see the following message:
The current input timing is not supported by the monitor display. Please
change your input timing to 5120×2160 or any other monitor listed timing as
per the monitor specifications.
The above message explains that the monitor cannot synchronize with the signal
that it is receiving from the computer. See Monitor Specifications for the
Horizontal and Vertical frequency ranges addressable by this monitor. The
recommended mode is 5120 x 2160. You can see the following message before the
DDC/CI function is disabled:
The function of adjusting display setting using PC application will be
disabled.
Do you wish to disable DDC/CI function? Yes No
When the monitor enters the Standby Mode, the following message appears:
Going into Standby mode…
Activate the computer and wake up the monitor to gain access to the OSD. If
you press any button other than the power button, the following messages
appears depending on the selected input:
No DP Signal form your device. Press any key on the keyboard to wake up. If
there is no display, press the monitor joystick to open up the Menu and select
the correct inport source.
92 | Operating the monitor
A message is displayed while the cable supporting DP alternate mode is
connected to the monitor under the following conditions: · When Auto Select
for Thunderbolt(140W) is set to Prompt for Multiple
Inputs. · When the ThunderboltTM cable is connected to the monitor.
Select the primary use of the monitor’s Thunderbolt connection:
Display PC screen while charging Only charge device
Always display PC screen while charging
If two or more ports are connected, when the Auto of Input Source is selected,
it will turn to the next port with signal.
Auto
Thunderbolt (140W)
DP
HDMI
Exit
Select OSD items of On in Standby Mode in the Personalize feature, the
following message appears:
Changing to this setting ( without symbol) will increase power consumption. Do
you want to continue?
Yes No
If adjust the Brightness level above the default level over 75%, the following
message will appear:
Adjusting to this value will increase power consumpiton above the default
level. Do you want to continue? Yes
No
· When you select Yes, the power message is displayed only once.
· When you select No, the power warning message appears again. · The power
warning message appears again only when the user does a Factory
Reset from the OSD menu.
Operating the monitor | 93
If either DP/HDMI/Thunderbolt (140W) input is selected and the corresponding
cable is not connected, a floating dialog box as shown below appears.
No DP Cable The display will go into Standby Mode in 4 minutes.
www.dell.com/U4025QW
or
No Thunderbolt(140W) Cable The display will go into Standby Mode in 4 minutes.
www.dell.com/U4025QW
or
No HDMI Cable The display will go into Standby Mode in 4 minutes.
www.dell.com/U4025QW
See Troubleshooting for more information.
94 | Operating the monitor
Setting the maximum resolution NOTE: The steps may vary slightly depending on
the version of Windows you have.
To set the maximum resolution for the monitor: In Windows 10 and Windows 11:
1. Right-click the desktop and click Display Settings. 2. If you have more
than one monitor connected, ensure that you select U4025QW. 3. Click the
Display Resolution dropdown list and select 5120 x 2160. 4. Click Keep
changes. If you do not see 5120 x 2160 as an option, you must update your
graphics driver to the latest version. Depending on your computer, complete
one of the following procedures: If you have a Dell desktop or laptop: · Go to
https://www.dell.com/support, enter your service tag, and download
the latest driver for your graphics card. If you are using a non-Dell computer
(laptop or desktop):
· Go to the support site for your computer and download the latest graphic
drivers. · Go to your graphics card website and download the latest graphic
drivers.
Operating the monitor | 95
Troubleshooting
WARNING: Before you begin any of the procedures in this section, follow the
Safety Instructions.
Self-test
Your monitor provides a self-test feature that allows you to check whether
your monitor is functioning properly. If your monitor and computer are
properly connected but the monitor screen remains dark, run the monitor self-
test by performing the following steps:
1. Turn off both your computer and the monitor. 2. Unplug the video cable
from the back of the computer. To ensure proper Self-Test
operation, remove all digital and the analog cables from the back of the
computer. 3. Turn on the monitor. The floating dialog box should appear on-
screen (against a black background), if the monitor cannot sense a video
signal and is working correctly. While in self-test mode, the power LED
remains white. Also, depending upon the selected input, one of the dialogs
that are shown below will continuously scroll through the screen.
No DP Cable The display will go into Standby Mode in 4 minutes.
www.dell.com/U4025QW
or
No Thunderbolt(140W) Cable The display will go into Standby Mode in 4 minutes.
www.dell.com/U4025QW
4. This message also appears during normal system operation if the video
cable is disconnected or damaged.
5. Turn off your monitor and reconnect the video cable; then turn on both
your computer and the monitor.
If your monitor screen remains blank after you use the previous procedure,
check your video controller and computer, because your monitor is functioning
properly.
96 | Troubleshooting
Built-in diagnostics
Your monitor has a built-in diagnostic tool that helps you determine if the
screen abnormality you are experiencing is an inherent problem with your
monitor, or with your computer and video card.
UltraSharp 40 Monitor
Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu
Personalize Others More Information
DDC/CI LCD Conditioning Self-Diagnostic Menu Voice Reset Others Factory Reset
On Off Select ENERGY STAR®
Exit
To run the built-in diagnostics: 1. Ensure that the screen is clean (no dust
particles on the surface of the screen). 2. Select OSD items of Self-
Diagnostics in Others feature. 3. Press the joystick button to start the
diagnostics. A gray screen is displayed. 4. Observe if the screen has any
defects or abnormalities. 5. Toggle the joystick once again until a red screen
is displayed. 6. Observe if the screen has any defects or abnormalities. 7.
Repeat steps 5 and 6 until the screen displays green, blue, black, and white
colors. Note any abnormalities or defects.
The test is complete when a text screen is displayed. To exit, toggle the
joystick control again. If you do not detect any screen abnormalities upon
using the built-in diagnostic tool, the monitor is functioning properly. Check
the video card and computer.
Troubleshooting | 97
Common Problems
The following table contains general information about common monitor problems
that you might encounter and the possible solutions:
Common
What you
Possible solutions
Symptoms experience
No video/power No picture
· Ensure that the video cable connecting
LED off
the monitor and the computer is properly
connected and secure.
· Verify that the power outlet is functioning
properly using any other electrical
equipment.
· Ensure that the power button is pressed
fully.
· Ensure that the correct input source is
selected in the Input Source menu.
No video/power No picture or no
· Increase brightness and contrast controls
LED on
brightness
using OSD.
· Perform monitor self-test feature check.
· Check for bent or broken pins in the video
cable connector.
· Run the built-in diagnostics.
· Ensure that the correct input source is
selected in the Input Source menu.
Missing pixels LCD screen has spots · Cycle power on-off.
· A pixel that is permanently off is a natural
defect that can occur in LCD technology.
· For more information about Dell Monitor
Quality and Pixel Policy, see Dell Support
site at:
https://www.dell.com/pixelguidelines.
Stuck-on pixels LCD screen has
· Cycle power on-off.
bright spots
· A pixel that is permanently off is a natural
defect that can occur in LCD technology.
· For more information about Dell Monitor
Quality and Pixel Policy, see Dell Support
site at:
https://www.dell.com/pixelguidelines.
Brightness
Picture too dim or · Reset the monitor to factory settings.
problems
too bright
· Adjust brightness and contrast controls
using OSD.
98 | Troubleshooting
Common
What you
Possible solutions
Symptoms experience
Safety-related Visible signs of smoke · Do not perform any troubleshooting steps.
issues
or sparks
· Contact Dell immediately.
Intermittent problems
Monitor malfunctions · Ensure that the video cable connecting
on and off
the monitor to the computer is connected
properly and is secure.
· Reset the monitor to factory settings.
· Perform a monitor self-test feature check
to determine if the intermittent problem
occurs in self-test mode.
Missing color
Picture missing color
· Perform monitor self-test. · Ensure that the video cable connecting
the monitor to the computer is connected properly and is secure. · Check for
bent or broken pins in the video cable connector.
Wrong color
Picture color is not good
· Change the settings of the Preset Modes in the Color menu OSD depending on
the application.
· Adjust R/G/B value under Custom Color in the Color menu OSD.
· Change the Input Color Format to PC RGB or YPbPr in the Color menu OSD.
· Run the built-in diagnostics.
Image retention from a static image left on the monitor for a long period of time
A faint shadow from the static image that is displayed appears on the screen
· Set the screen to turn off after a few minutes of screen idle time. These
can be adjusted in the Windows Power Options or Mac Energy Saver setting.
· Alternatively, use a dynamically changing screensaver.
TBT out cannot TBT out port connect · Make sure the OSD Thunderbolt Daisy
display
the 2nd Monitor
Chain is “Optimized”.
cannot display, but · Open the display setting in NB/PC, if you
the display setting
can see NB/PC and 1st monitor, select 2nd
can recognize 2
only, the 2nd monitor should be display.
monitor
Troubleshooting | 99
Common
What you
Possible solutions
Symptoms experience
The monitor Connect the Dock · Connect the monitor directly with the
cannot detect USB-C® cable to the platform.
signal connect platform. Connect · Change the TBT4 cable to a USB-C® cable.
with dock after DUT with TBT4 cable
AC/DC Off/On, to the Dock USB-C®
cable uplug/ port. The monitor
Plug
cannot detect the
signal after AC Off/
On TBT4 cable
Unplug/Plug
The two monitor maximum resolution cannot reach 5120 x 2160 @ 120 Hz when TBT Daisy Chain
Connect 1st DUT · Make sure the OSD Thunderbolt Daisy
with TBT4 cable
Chain is “Optimized”.
to the platform.
Connect 2nd DUT
to the 1st DUT
ThunderboltTM out
port with TBT4 cable.
The 2nd monitor or
1st monitor cannot
reach 5120 x 2160
@120 Hz
2nd monitor Connect 1st DUT · Intel UHD graphic limitation, suggest to use
shows black with TBT4 cable
Intel Iris graphic.
screen when to the platform.
· Disable SmartHDR on both OSD and
TBT daisy chain Connect 2nd DUT
Windows display setting.
and enable
to the 1st DUT
SmartHDR
ThunderboltTM out
on both OSD port with TBT4 cable.
and Windows Set both DUT to the
display setting maximum resolution
(5120 x 2160). Enable
SmartHDR on both
OSD and Windows
display setting. 2nd
monitor shows black
screen
100 | Troubleshooting
Common
Symptoms
Auto source cannot automatically switch to DP input source when you connect
the DP cable to the platform
What you
experience
When you connect the HDMI cable and DP cable to monitor, connect HDMI cable to
platform and display normally, then connect DP cable to platform. The signal
cannot automatically to DP signal
Possible solutions
· Unplug and plug the DP cable from the monitor side.
· Go to the OSD menu and enter input source select DP manually.
Troubleshooting | 101
Product-specific problems
Problem
What you
Possible solutions
experience
Screen image is The image is centered · Check the Aspect Ratio setting in the
too small
on the screen, but
Display menu OSD.
does not fill the entire · Reset the monitor to factory settings.
viewing area
Cannot adjust the monitor with the joystick control on the rear of the monitor
OSD does not appear on the screen
· Turn off the monitor, unplug the monitor power cable, plug it back, and then turn on the monitor.
No Input Signal when user controls are pressed
No picture, the LED light is white
· Check the signal source. Ensure that the computer is not in the power-saving
mode by moving the mouse or pressing any key on the keyboard.
· Check whether the signal cable is plugged in properly. Connect the signal
cable again, if necessary.
· Reset the computer or video player.
The picture does not fill the entire screen
The picture cannot fill the height or width of the screen
· Due to different video formats (aspect ratio) of DVDs, the monitor may
display in full screen.
· Run the built-in diagnostics.
No image when using DP connection to the PC
Blank screen
· Verify which DP standard is your Graphics card is certified to. Download and install the latest graphics card driver.
No image when using ThunderboltTM 4 connection to computer, laptop, and so on
Blank screen
· Verify if the ThunderboltTM 4 interface of the device can support DP
alternate mode.
· Verify if the device required more than EPR 140W power charging.
· Set Windows to Projection mode. · Ensure that the ThunderboltTM 4 cable is
not damaged.
102 | Troubleshooting
Problem
No charging when using ThunderboltTM 4 connection to computer, laptop, and so
on
What you experience No charging
Intermittent Intermittent charging charging when using ThunderboltTM 4 connection to computer, laptop, and so on
No network connection
Network dropped or Intermittent
Possible solutions
· Verify if the device can support one of the 5 V/9 V/15 V/20 V/28 V charging
profiles.
· Verify if the Notebook requires a >EPR 140W power adapter.
· If the Notebook requires a >EPR 140W power adaptor, it may not charge with
the ThunderboltTM 4 connection.
· Ensure that you use only the Dell approved adapter or the adapter that comes
with the product.
· Ensure that the ThunderboltTM 4 cable is not damaged.
· Check if the maximum power consumption of the device is over EPR 140 W.
· Ensure that you use only the Dell approved adapter or the adapter that comes
with the product.
· Ensure that the ThunderboltTM 4 cable is not damaged.
· Do not toggle Off/On the power button when the network is connected, keeps
the power button On.
Troubleshooting | 103
Problem
What you
Possible solutions
experience
The LAN port is Operating system not functioning setting or cable
connection issue
· Ensure that the latest BIOS and drivers for your computer are installed on
your computer.
· Ensure that the RealTek 2.5G Ethernet Controller is installed in the Windows
Device Manager.
· If your BIOS Setup has a LAN/GBE Enabled/Disabled option, make sure it is
set to Enabled.
· Ensure that the Ethernet cable is connected securely on the monitor and the
hub/router/firewall.
· Check the status LED of the Ethernet cable to confirm connectivity.
Reconnect both ends of the Ethernet cable if the LED is not lit.
· First power off the Computer and unplug the ThunderboltTM 4 cable and power
cord of the monitor. Then power on the computer, plug in the monitor power
cord and ThunderboltTM 4 cable.
The detected light level drops significantly
When the Ambient · Check whether an object is obstructing
Light Sensor is on, the the sensor area.
detected ambient light · Ensure that a webcam is not mounted
drops significantly
over the sensor area.
· Wipe clean any dust that may be covering
the sensor area.
· Ensure that the display is not pivoted and
placed to another monitor side-by-side.
104 | Troubleshooting
Universal Serial Bus (USB) specific problems
Specific
What you experience Possible solutions
Symptoms
USB interface is USB peripherals are not working not working
· Check that your display is turned ON. · Reconnect the upstream cable to your
computer. · Reconnect the USB peripherals
(downstream connector). · Turn off the monitor and turn it on again. · Reboot
the computer. · Certain USB devices such as portable
hard drives require higher power source; connect the drive to the computer
directly.
SuperSpeed USB 3.2 Gen2 interface is slow.
SuperSpeed USB 3.2 Gen2 peripherals working slowly or not working at all
· Check that your computer is USB 3.0-capable.
· Some computers have USB 3.0, USB 2.0, and USB 1.1 ports. Ensure that the
correct USB port is used.
· Reconnect the upstream cable to your computer.
· Reconnect the USB peripherals (downstream connector).
· Reboot the computer.
Wireless USB Wireless USB peripherals stop peripherals responding working when
a slowly or only working USB 3.0 device as the distance is plugged in between
itself and its
receiver decreases
· Increase the distance between the USB 3.0 peripherals and the wireless USB
receiver.
· Position your wireless USB receiver as close as possible to the wireless USB
peripherals.
· Use a USB-extender cable to position the wireless USB receiver as far away
as possible from the USB 3.0 port.
Troubleshooting | 105
Regulatory information
FCC notices (U.S. only) and other regulatory information
For FCC notices and other regulatory information, see the regulatory
compliance at https://www.dell.com/regulatory_compliance.
EU product database for energy label and product information sheet
U4025QW: https://eprel.ec.europa.eu/qr/1821612
106 | Regulatory information
Contacting Dell
To contact Dell for sales, technical support, or customer service issues, see
www.dell. com/contactdell.
NOTE: Availability varies by country and product, and some services may not be
available in your country. NOTE: If you do not have an active internet
connection, you can find contact information on your purchase invoice, packing
slip, bill, or Dell product catalog.
Contacting Dell | 107
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