DELL Technologies M96KV Latitude 3450 Core i5 Laptop Owner’s Manual

Working inside your computer

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Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.
Two recognized types of ESD damage are catastrophic and intermittent failures. Catastrophic ­ Catastrophic failures represent approximately 20 percent of ESD-related failures. The damage causes an
immediate and complete loss of device functionality. An example of catastrophic failure is a memory DIMM that has received a static shock and immediately generates a “No POST/No Video” symptom with a beep code that is emitted for missing or nonfunctional memory. Intermittent ­ Intermittent failures represent approximately 80 percent of ESD-related failures. The high rate of intermittent failures means that most of the time when damage occurs, it is not immediately recognizable. The DIMM receives a static shock, but the tracing is merely weakened and does not immediately produce outward symptoms that are related to the damage. The weakened trace may take weeks or months to melt, and in the meantime may cause degradation of memory integrity, intermittent memory errors, and so on.
The more difficult type of damage to recognize and troubleshoot is the intermittent (also called latent or “walking wounded”) failure.
Perform the following steps to prevent ESD damage: Use a wired ESD wrist strap that is properly grounded. Wireless anti-static straps do not provide adequate protection.
Touching the chassis before handling parts does not ensure adequate ESD protection on parts with increased sensitivity to ESD damage. Handle all static-sensitive components in a static-safe area. If possible, use anti- static floor pads and workbench pads. When unpacking a static-sensitive component from its shipping carton, do not remove the component from the anti- static packing material until you are ready to install the component. Before unwrapping the anti-static packaging, ensure that you discharge static electricity from your body. Before transporting a static-sensitive component, place it in an anti-static container or packaging.
ESD Field Service kit
The unmonitored Field Service kit is the most commonly used service kit. Each Field Service kit includes three main components: anti-static mat, wrist strap, and bonding wire.
Components of an ESD field service kit
The components of an ESD field service kit are: Anti-Static Mat ­ The anti- static mat is dissipative and parts can be placed on it during service procedures. When using an
anti-static mat, your wrist strap should be snug and the bonding wire should be connected to the mat and to any bare metal on the computer being worked on. Once deployed properly, service parts can be removed from the ESD bag and placed directly on the mat. ESD-sensitive items are safe in your hand, on the ESD mat, in the computer, or inside an ESD bag. Wrist Strap and Bonding Wire ­ The wrist strap and bonding wire can be either directly connected between your wrist and bare metal on the hardware if the ESD mat is not required, or connected to the anti-static mat to protect hardware that is temporarily placed on the mat. The physical connection of the wrist strap and bonding wire between your skin, the ESD mat, and the hardware is known as bonding. Use only Field Service kits with a wrist strap, mat, and bonding wire. Never use wireless wrist straps. Always be aware that the internal wires of a wrist strap are prone to damage from normal wear and tear, and must be checked regularly with a wrist strap tester in order to avoid accidental ESD hardware damage. It is recommended to test the wrist strap and bonding wire at least once per week. ESD Wrist Strap Tester ­ The wires inside an ESD strap are prone to damage over time. When using an unmonitored kit, it is a best practice to regularly test the strap prior to each service call, and at a minimum, test once per week. A wrist strap tester is the best method for doing this test. If you do not have your own wrist strap tester, check with your regional office to find out if they have one. To perform the test, plug the bonding-wire of wrist-strap into the tester while it is strapped to your wrist and push the button to test. A green LED is lit if the test is successful; a red LED is lit and an alarm sounds if the test fails. Insulator Elements ­ It is critical to keep ESD sensitive devices, such as plastic heat sink casings, away from internal parts that are insulators and often highly charged. Working Environment ­ Before deploying the ESD Field Service kit, assess the situation at the customer location. For example, deploying the kit for a server environment is different than for a desktop or laptop environment. Servers are typically installed in a rack within a data center; desktops or laptops are typically placed on office desks or cubicles. Always look for a large open flat work area that is free of clutter and large enough to deploy the ESD kit with additional space to accommodate the type of computer that is being repaired. The workspace should also be free of insulators that can cause an ESD event. On the work area, insulators such as Styrofoam and other plastics should always be moved at least 12 inches or 30 centimeters away from sensitive parts before physically handling any hardware components.

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ESD Packaging ­ All ESD-sensitive devices must be shipped and received in static-safe packaging. Metal, static-shielded bags are preferred. However, you should always return the damaged part using the same ESD bag and packaging that the new part arrived in. The ESD bag should be folded over and taped shut and all the same foam packing material should be used in the original box that the new part arrived in. ESD-sensitive devices should be removed from packaging only at an ESD-protected work surface, and parts should never be placed on top of the ESD bag because only the inside of the bag is shielded. Always place parts in your hand, on the ESD mat, in the computer, or inside an anti-static bag.
Transporting Sensitive Components ­ When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.
ESD protection summary
It is recommended to always use the traditional wired ESD grounding wrist strap and protective anti-static mat when servicing Dell products. In addition, it is critical to keep sensitive parts separate from all insulator parts while performing service and use anti-static bags for transporting sensitive components.
Transporting sensitive components
When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.
After working inside your computer
About this task
CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer.
Steps 1. Replace all screws and ensure that no stray screws remain inside your computer. 2. Connect any external devices, peripherals, or cables you removed before working on your computer. 3. Replace any media cards, discs, or any other parts that you removed before working on your computer. 4. Connect your computer and all attached devices to their electrical outlets.
NOTE: To exit service mode, ensure to connect the AC adapter to the power- adapter port on your computer.
5. Press the power button to turn on the computer. Your computer will automatically return to normal functioning mode.
BitLocker
CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress, and the system will ask for the recovery key on each reboot. If the recovery key is not known, this can result in data loss or an unnecessary operating system reinstall. For more information about this subject, see Knowledge Article: updating the BIOS on Dell systems with BitLocker enabled. The installation of the following components triggers BitLocker: Hard disk drive or solid-state drive System board
Recommended tools
The procedures in this document may require the following tools: Phillips screwdriver #0 Phillips screwdriver #1 Plastic scribe

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Screw list

NOTE: When removing screws from a component, it is recommended to note the screw type, and the quantity of screws, and then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is restored when the component is replaced.
NOTE: Some computers have magnetic surfaces. Ensure that the screws are not left attached to such surfaces when replacing a component.
NOTE: Screw color may vary with the configuration ordered.

Table 28. Screw list Component Base cover

Screw type Captive

Quantity 9

Screw image

Battery

Captive

5

Heat sink – discrete graphics Captive

7

Heat sink – integrated graphics Captive

4

Display assembly

M2.5×5

4

Display panel Fan I/O board

M2.5×2.5

6

M2x3

2

M2.5×5

2

M2x5

2

M2x3

1

M.2230 solid-state drive

M2x2

2

Power button board

M2x2.5

2

Power-adapter port

M2.5×5

2

System board

M2x3

4

M2x5

2

M2.5×5

2

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Table 28. Screw list (continued)

Component

Screw type

Touchpad

M2x2

Wireless-card

M2x3

Quantity 6
1

Screw image

Major components of Latitude 3450
The following image shows the major components of Latitude 3450. NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options.

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Figure 8. Exploded view of latitude 3450
1. Base cover 2. I/O board

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3. M.2 2230 solid state drive 4. Memory modules 5. Wireless card 6. System board 7. Speakers 8. Palm-rest and keyboard assembly 9. Display assembly 10. Touchpad 11. DC-in port cable 12. Battery 13. I/O board cable 14. Coin cell battery 15. Fan 16. Heat sink 17. Power button

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5
Removing and installing Customer Replaceable Units (CRUs)
The replaceable components in this chapter are Customer Replaceable Units (CRUs). CAUTION: Customers can replace only the Customer Replaceable Units (CRUs) following the safety precautions and replacement procedures. NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
Base cover
Removing the base cover
Prerequisites 1. Follow the procedure in Before working inside your computer. About this task The following images indicate the location of the base cover and provide a visual representation of the removal procedure.

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Figure 9. Removing the base cover

Removing and installing Customer Replaceable Units (CRUs)

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Figure 10. Removing the base cover
Steps 1. Loosen the nine captive screws that secure the base cover to the chassis. 2. Using a plastic scribe, pry open the base cover starting from the recesses, which are located in the U-shaped indents at the
bottom edge of the base cover, near the hinges. 3. Pry open the top side of the base cover and continue working on the left, right and, bottom sides to open the base cover. 4. Carefully lift and remove the base cover from the chassis.
Installing the base cover
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following images indicate the location of the base cover and provide a visual representation of the installation procedure.

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Figure 11. Installing the base cover

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Figure 12. Installing the base cover
Steps 1. Place the base cover on top of the chassis. 2. Align the screw holes on the base cover with the screw holes on the palm-rest and keyboard assembly, and snap the base
cover latches into place. 3. Tighten the nine captive screws to secure the base cover to the chassis.
Next steps 1. Follow the procedure in After working inside your computer.
Memory module
Removing the memory module
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.

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About this task The following images indicate the location of the memory module and provide a visual representation of the removal procedure.

Figure 13. Removing the memory module
Steps 1. Pry the clips securing the memory module until the memory module pops-up. 2. Remove the memory module from the memory slot.
Installing the memory modules
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The figure indicates the location of the memory module and provides a visual representation of the installation procedure.

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Figure 14. Installing the memory modules
Steps 1. Align the notch on the memory module with the tab on the memory module slot. 2. Slide the memory module firmly into the slot at an angle. 3. Press the memory module down until it clicks into place.
NOTE: If you do not hear the click, remove the memory module and reinstall it.
Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer.
Wireless card
Removing the wireless card
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.
About this task The following images indicate the location of the wireless card and provide a visual representation of the removal procedure.

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Figure 15. Removing the wireless card
Steps 1. Remove the screw (M2x3) that secures wireless-card bracket to the system board. 2. Slide and remove the wireless-card bracket from the system. 3. Disconnect the WLAN-antenna cables from the respective connectors on the wireless card. 4. Lift and remove the wireless card from the wireless card slot on the system board.
Installing the wireless card
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

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About this task

Figure 16. Installing the wireless card

Steps 1. Connect the WLAN-antenna cables to the respective connectors on the wireless card.
NOTE: The WLAN-antenna cable connectors are fragile, and utmost care should be taken while replacing them.

Table 29. WLAN-antenna cable color scheme
Connectors on the wireless card
Main – White triangle () on the wireless module of the system board
Auxiliary – Solid triangle () on the wireless module of the system board

Antenna-cable color White cable
Black cable

2. Align the notch on the wireless card with the tab on the wireless card slot. 3. Slide the wireless card at an angle into the wireless card slot. 4. Place the wireless-card bracket on the wireless card. 5. Align the screw hole on the wireless-card bracket with the screw hole on the system board.

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Removing and installing Customer Replaceable Units (CRUs)

6. Replace the screw (M2x3) to secure the wireless-card bracket and the wireless card to the system board.
Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer.
Coin-cell battery
Removing the coin-cell battery
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.
About this task NOTE: When the coin-cell battery is removed, it clears the CMOS settings.
The following image indicates the location of the coin-cell battery and provides a visual representation of the removal procedure.

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Figure 17. Removing the coin-cell battery
Steps 1. Disconnect the coin-cell battery cable from the connector on the system board. 2. Using a plastic scribe, pry the coin-cell battery off its slot on the palm-rest and keyboard assembly.
Installing the coin-cell battery
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the coin-cell battery and provides a visual representation of the installation procedure.

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Removing and installing Customer Replaceable Units (CRUs)

Figure 18. Installing the coin-cell battery
Steps 1. Align and place the coin-cell battery into its slot on the palm-rest and keyboard assembly. 2. Connect the coin-cell battery cable to the connector on the system board.
Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer.
M.2 solid state drive
Removing the M.2 2230 solid-state drive
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.

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About this task
NOTE: This procedure applies only to systems shipped with a M.2 2230 solid- state drive installed.
NOTE: The M.2 solid-state drive that is installed on your system depends on the configuration ordered. Supported card configurations on the M.2 solid- state drive slot is M.2 2230 solid-state drive. The following images indicate the location of the M.2 2230 solid-state drive and provide a visual representation of the removal procedure.

Figure 19. Removing the M.2 2230 solid-state drive
Steps 1. Remove the screw (M2x2) to secures the M.2 2230 solid-state drive holder to the system board. 2. Lift the M.2 2230 solid-state drive holder off the palm-rest and keyboard assembly. 3. Flip the M.2 2230 solid-state drive holder and remove the single screw (M2x2) that secure the M.2 2230 solid-state drive to
the M.2 2230 solid-state drive holder. 4. Remove the M.2 2230 solid-state drive.
Installing the M.2 2230 solid-state drive
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following images indicate the location of the M.2 2230 solid-state drive and provide a visual representation of the installation procedure.

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Removing and installing Customer Replaceable Units (CRUs)

Figure 20. TInstalling the M.2 2230 solid-state drive
Steps 1. Align the notch on the M.2 2230 solid-state drive with the tab on the M.2 2230 solid-state drive holder. 2. Replace the single screw (M2x2) that secure the M.2 2230 solid-state drive to the M.2 2230 solid-state drive holder. 3. Slide the M.2 2230 solid-state drive into the M.2 card connector on the system board. 4. Align the screw hole on the M.2 2230 solid-state drive holder with the screw hole on the palm-rest and keyboard assembly. 5. Replace the screw (M2x2) to secure the M.2 2230 solid-state drive holder to the system board.
Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer.
Speakers
Removing the speakers
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.
About this task The following images indicate the location of the speakers and provide a visual representation of the removal procedure.

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Figure 21. Removing the speakers
Steps 1. Disconnect the speaker cable from the connector on the system board. 2. Unroute the speaker cable from the routing guides on the palm-rest and keyboard assembly. 3. Remove the speakers from the palm-rest keyboard and assembly.
Installing the speakers
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task NOTE: If the rubber grommets are pushed out when removing the speakers, push them back in place before replacing the speakers.
The following images indicate the location of the speakers and provide a visual representation of the installation procedure

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Removing and installing Customer Replaceable Units (CRUs)

Figure 22. Installing the speakers
.
Steps 1. Using the alignment posts and rubber grommets, place the speakers in their slots on the palm-rest and keyboard assembly. 2. Route the speaker cables through the routing guides on the palm-rest and keyboard assembly. 3. Connect the speaker cable to the connector on the system board. 4. Ensure that the alignment posts are threaded through the rubber grommets on the speakers. 5. After placing the speakers on the palm-rest and keyboard assembly, ensure that rubber grommets are seated into the slot
and installed on the speakers correctly.
Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer.

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6
Removing and installing Field Replaceable Units (FRUs)
The replaceable components in this chapter are Field Replaceable Units (FRUs). CAUTION: The information in this section is intended for authorized service technicians only.
CAUTION: To avoid any potential damage to the component or loss of data, ensure that an authorized service technician replaces the Field Replaceable Units (FRUs). CAUTION: Dell Technologies recommends that this set of repairs, if needed, to be conducted by trained technical repair specialists. CAUTION: As a reminder, your warranty does not cover damages that may occur during FRU repairs that are not authorized by Dell Technologies.
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
Battery
Rechargeable Li-ion battery precautions
CAUTION: Exercise caution when handling rechargeable Li-ion batteries. Discharge the battery completely before removing it. Disconnect the AC power adapter from the computer
and operate the computer solely on battery power–the battery is fully discharged when the computer no longer turns on when the power button is pressed. Do not crush, drop, mutilate, or penetrate the battery with foreign objects. Do not expose the battery to high temperatures, or disassemble battery packs and cells. Do not apply pressure to the surface of the battery. Do not bend the battery. Do not use tools of any kind to pry on or against the battery. Ensure any screws during the servicing of this product are not lost or misplaced, to prevent accidental puncture or damage to the battery and other computer components. If the battery gets stuck inside your computer as a result of swelling, do not try to release it as puncturing, bending, or crushing a rechargeable Li-ion battery can be dangerous. In such an instance, contact Dell technical support for assistance. See www.dell.com/contactdell. Always purchase genuine batteries from www.dell.com or authorized Dell partners and resellers. Swollen batteries should not be used and should be replaced and disposed properly. For guidelines on how to handle and replace swollen rechargeable Li-ion batteries, see Handling swollen rechargeable Li- ion batteries.
Removing the battery
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.

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Removing and installing Field Replaceable Units (FRUs)

About this task The following images indicate the location of the battery and provide a visual representation of the removal procedure.

Figure 23. Removing the battery
Steps 1. Use the pull tab to disconnect the battery cable from the connector on the system board. 2. Loosen the five captive screws that secure the battery to the palm-rest and keyboard assembly. 3. Lift the battery off the palm-rest and keyboard assembly.
Installing the battery
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following images indicate the location of the battery and provide a visual representation of the installation procedure.

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Figure 24. Installing the battery
Steps 1. Align the screw holes on the battery to the screw holes on the palm- rest and keyboard assembly. 2. Tighten the five captive screws to secure the battery to the palm-rest and keyboard assembly. 3. Connect the battery cable to the connector on the system board.
Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer.
Battery cable
Removing the battery cable
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the battery.
About this task The following image indicates the location of the battery cable and provides a visual representation of the removal procedure.

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Removing and installing Field Replaceable Units (FRUs)

Figure 25. Removing the battery cable
Steps 1. Unroute the battery cable from the routing guides on the battery. 2. Disconnect the battery cable from the connector on the battery. 3. Lift the battery cable away from the battery.
Installing the battery cable
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the battery cable and provides a visual representation of the installation procedure.

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Figure 26. Installing the battery cable
Steps 1. Connect the battery cable to the connector on the battery. 2. Route the battery cable through the routing guides on the battery.
Next steps 1. Install the battery. 2. Install the base cover. 3. Follow the procedure in After working inside your computer.
Power-adapter port
Removing the power-adapter port
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.

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About this task
The following images indicate the location of the power-adapter port and provide a visual representation of the removal procedure.

Figure 27. Removing the power-adapter port
Steps 1. Remove the two screws (M2.5×5) that secure the right display hinge to the system. 2. Lift the right display hinge in upward direction away from the system. 3. Disconnect the power-adapter port cable from the connector on the system board and remove the power-adapter port from
the system board.
Installing the power-adapter port
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following images indicate the location of the power- adapter port and provide a visual representation of the installation procedure.

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Figure 28. Installing the power-adapter port
Steps 1. Align and place the power-adapter port on the system board. 2. Connect the power-adapter port cable to the connector on the system board. 3. Gently press the right display hinge in downward direction towards the system. 4. Align the screw holes on the right display hinge with the screw holes on the system. 5. Replace the two screws (M2.5×5) to secure the right display hinge to the system.
Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer.
Heat sink
Removing the heat-sink for integrated graphics
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.
About this task NOTE: The heat-sink may become hot during normal operation. Allow sufficient time for the heat-sink to cool before you touch it. NOTE: For maximum cooling of the processor, do not touch the heat-transfer areas on the heat-sink. The oils in your skin can reduce the heat-transfer capability of the thermal grease.
The following image indicates the location of the heat-sink and provides a visual representation of the removal procedure.

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Figure 29. Removing the heat-sink for integrated graphics
Steps 1. Loosen the four captive screws that secure the heat-sink to the system board in the reverse sequential order mentioned on
the heat-sink [4 > 3 > 2 > 1]. 2. Lift and remove the heat-sink from the system board.
Installing the heat-sink for integrated graphics
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task NOTE: If either the system board or the heat-sink is replaced, use the thermal grease provided in the kit to ensure that thermal conductivity is achieved.
The following image indicates the location of the heat-sink and provides a visual representation of the installation procedure.

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Figure 30. Installing the heat-sink for integrated graphics
Steps 1. Place the heat-sink into its slot on the system board. 2. Align the screw holes on the heat-sink to the screw holes on the system board in the sequential order mentioned on the
heat-sink [1 > 2 > 3 > 4] . 3. Tighten the four captive screws to secure the heat-sink to the system board.
Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer.
Removing the heat-sink for discrete graphics
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.
About this task NOTE: The heat-sink may become hot during normal operation. Allow sufficient time for the heat-sink to cool before you touch it. NOTE: For maximum cooling of the processor, do not touch the heat transfer areas on the heat-sink. The oils in your skin can reduce the heat transfer capability of the thermal grease.
The following image indicates the location of the heat-sink and provides a visual representation of the removal procedure.

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Figure 31. Removing the heat-sink for discrete graphics
Steps 1. Loosen the seven captive screws that secure the heat-sink to the system board in the reverse sequential order mentioned
on the thermal heat-sink [7 > 6 > 5 > 4 > 3 > 2 > 1]. 2. Lift and remove the heat-sink from the system board.
Installing the heat-sink for discrete graphics
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task NOTE: If either the system board or the heat-sink is replaced, use the thermal grease that is provided in the kit to ensure that thermal conductivity is achieved.
The following image indicates the location of the heat-sink and provides a visual representation of the installation procedure.

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Figure 32. Installing the heat-sink for discrete graphics
Steps 1. Place the heat-sink into its slot on the system board. 2. Align the screw holes on the heat-sink to the screw holes on the system board in the sequential order mentioned on the
heat-sink [1 > 2 > 3 > 4 > 5 > 6 > 7] . 3. Tighten the seven captive screws to secure the heat-sink to the system board.
Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer.
Fan
Removing the fan
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.
About this task NOTE: The fan may become hot during normal operation. Allow sufficient time for the thermal fan to cool before you touch it. NOTE: For maximum cooling of the processor, do not touch the heat-transfer areas on the thermal fan. The oils in your skin can reduce the heat-transfer capability of the thermal grease.
The following image indicates the location of the thermal fan and provides a visual representation of the removal procedure.

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Figure 33. Removing the fan
Steps 1. Disconnect the thermal-fan cable from the connector on the system board. 2. Un route the WLAN antenna cables from the routing guides 3. Remove the two screws (M2x3) that secure the thermal fan to the system board. 4. Lift and remove the thermal fan from the system board.
Installing the fan
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the thermal fan and provides a visual representation of the installation procedure.

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Figure 34. Installing the fan
Steps 1. Place and align the screw holes on the fan with the screw holes on to the system board. 2. Replace the two screws (M2x3) to secure the thermal fan to the system board. 3. Connect the thermal-fan cable to the connector on the system board.
Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer.
Touchpad
Removing the touchpad
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the battery.
About this task The following images indicate the location of the touchpad and provide a visual representation of the removal procedure.

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Figure 35. Removing the touchpad
Steps 1. Open the latch and disconnect the touchpad cable from the connector on the system board. 2. Open the latch and disconnect the keyboard cable from the connector on the touchpad module. 3. Open the latch and disconnect the Keyboard-backlight cable from the connector on the touchpad. 4. Partially peel and lift up the adhesive shielding cover from over the touchpad. 5. Remove the six screws (M2x2) that secure the touchpad bracket to the touchpad module. 6. Lift the touchpad module at an angle and slide it out to remove the touchpad module from the palm-rest and keyboard
assembly.
Installing the touchpad
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following images indicate the location of the touchpad and provide a visual representation of the installation procedure.

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Figure 36. Installing the touchpad
Steps 1. Align and place the touchpad module into the slot on the palm-rest and keyboard assembly. 2. Replace the six screws (M2x2) to secure the touchpad module to the palm-rest and keyboard assembly. 3. Adhere the adhesive shielding cover over the touchpad. 4. Connect the keyboard-backlight cable to the connector on the touchpad module. . 5. Connect the keyboard cable to the connector on the touchpad module close the latch. 6. Connect the touchpad cable to the connector on the system board and close the latch.
Next steps 1. Install the battery. 2. Install the base cover. 3. Follow the procedure in After working inside your computer.

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I/O board
Removing the I/O board
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.
About this task The following images indicate the location of the I/O board and provide a visual representation of the removal procedure.

Figure 37. Removing the I/O board
CAUTION: The system has a coin-cell battery that is connected to the I/O board. Disconnecting the I/O board cable resets the BIOS setup program settings to default. Note the BIOS setup program settings before disconnecting the I/O board cable.

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Steps 1. Remove the two screws (M2.5×5) that secure the left display hinge to the system. 2. Lift the left display hinge in upward direction away from the system. 3. Remove the two screws (M2x5) that secure the network port. 4. Disconnect the coin-cell battery cable from the connector on the I/O board. 5. Disconnect the fingerprint reader flexible printed circuits from the connector on the I/O board.
NOTE: This procedure applies only to systems shipped with a power button with fingerprint reader installed.
6. Open the latch and disconnect the I/O-board cable from the I/O board. 7. Remove the screw (M2x3) that secures the I/O board to the palm-rest and keyboard assembly. 8. Lift the I/O board off the palm-rest and keyboard assembly.
Installing the I/O board
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following images indicate the location of the I/O board and provide a visual representation of the installation procedure

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Figure 38. Installing the I/O board
. CAUTION: The system has a coin-cell battery that is connected to the I/O board. Disconnecting the I/O board cable resets the BIOS setup program settings to default. Note the BIOS setup program settings before disconnecting the I/O board cable.
Steps 1. Place and align the screw holes on the I/O board with the screw holes on the palm-rest and keyboard assembly. 2. Connect the I/O-board cable to the connector on the I/O board and close its latch. 3. Replace the screw (M2x3) to secure the I/O board to the palm-rest and keyboard assembly. 4. Connect the fingerprint reader flexible printed circuits to the connector on the I/O board securing the fingerprint reader
flexible printed circuits. NOTE: This procedure applies only to systems shipped with a power button with fingerprint reader installed.
5. Connect the coin-cell battery cable to the connector on the I/O board. 6. Replace the two screws (M2x5) to secure the network port. 7. Gently press the left display hinge in downward direction towards the system. 8. Align the screw holes on the left display hinge with the screw holes on the system.

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9. Replace the three screws (M2.5×5) to secure the left display hinge to the system.
Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer.
Power-button board
Removing the power button
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the I/O board.
About this task The following images indicate the location of the power button and provide a visual representation of the removal procedure.

Figure 39. Removing the power button
Steps 1. Remove the two screws (M2x2.5) that secures the power button to the palm-rest and keyboard assembly. 2. Lift to remove the power button from the slot on the palm-rest and keyboard assembly.
Installing the power button
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

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About this task The following images indicate the location of the power button and provide a visual representation of the installation procedure.

Figure 40. Installing the power button
Steps 1. Align the screw holes on the power button to the screw holes on the palm-rest and keyboard assembly. 2. Replace the two screws (M2x2.5) to secure the power button to the palm-rest and keyboard assembly.
Next steps 1. Install the I/O board. 2. Install the base cover. 3. Follow the procedure in After working inside your computer.
System board
Removing the system board
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the battery. 4. Remove the M.2 2230 solid- state drive 5. Remove the wireless card. 6. Remove the fan. 7. Remove the heat sink. 8. Remove the display assembly.
About this task The following image indicates the connectors on your system board.

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Figure 41. System-board connectors
1. Display-cable connector 3. Speaker-cable connector 5. Memory-module connectors 7. WLAN-card connector 9. I/O-board cable connector

2. DC-in port connector 4. Touchpad-cable connector 6. Battery-cable connector 8. M.2 solid-state drive connector 10. Fan-cable connector

The following images indicate the location of the system board and provide a visual representation of the removal procedure.

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Figure 42. Removing the System Board

CAUTION: The system has a coin-cell battery that is connected to the I/O board. Disconnecting the I/O board cable resets the BIOS setup program settings to default. Note the BIOS setup program settings before disconnecting the I/O board cable.

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Steps 1. Remove the two screws (M2.5×5) that secure the right display hinge to the system board. 2. Lift the right display hinge in upward direction away from the system board. 3. Remove the two screws (M2x5) that secure the USB type-C bracket to the system board. 4. Lift and remove the USB type-C bracket from the system board. 5. Disconnect the following cables from the respective connectors on the system board: Touchpad cable I/O board cable Speaker cable Fan cable Display cable Power adapter port cable 6. Remove the four screws (M2x3) that secure the system board to the palm-rest and keyboard assembly. 7. Remove the system board from the palm-rest and keyboard assembly.
Installing the system board
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following images indicate the location of the system board and provide a visual representation of the installation procedure.

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Figure 43. Installing the system board

Figure 44. Installing the system board

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CAUTION: The system has a coin-cell battery that is connected to the I/O board. Disconnecting the I/O board cable resets the BIOS setup program settings to default. Note the BIOS setup program settings before disconnecting the I/O board cable.
Steps 1. Align the screw holes on the system board with the screw holes on the palm-rest and keyboard assembly. 2. Replace the four screws (M2x3) to secure the system board to the palm-rest and keyboard assembly. 3. Connect the following cables to the respective connectors on the system board: Touchpad cable I/O board cable Speaker cable Fan cable Display cable Power adapter port cable 4. Align the screw holes on the USB type-C bracket with the screw holes on the system board. 5. Replace the screw (M2x5) to secure the USB type-C bracket to the system board. 6. Gently press the right display hinge in downward direction towards the system board. 7. Align the screw holes on the right display hinge with the screw holes on the system board. 8. Replace the two screws (M2.5×5) to secure the right display hinge to the system board.
Next steps 1. Install the display assembly. 2. Install the heat-sink. 3. Install the fan. 4. Install the wireless card. 5. Install the M.2 2230 solid- state drive 6. Install the battery. 7. Install the base cover. 8. Follow the procedure in After working inside your computer.
Palm-rest and keyboard assembly
Removing the palm-rest and keyboard assembly
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the battery. 4. Remove the M.2 2230 solid- state drive 5. Remove the . 6. Remove the coin-cell battery. 7. Remove the display assembly. 8. Remove the I/O board. 9. Remove the power button 10. Remove the speakers. 11. Remove the touchpad. 12. Remove the system board.
NOTE: The system board can be removed with the heat-sink that is attached to it in order to simplify the procedure and preserve the thermal bond between the system board and the heat-sink. 13. Remove the power-adapter port. 14. Remove the fan. 15. Remove the heat-sink.

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About this task
NOTE: The palm-rest assembly cannot be further disassembled once all the pre- removal parts procedures are completed. If the keyboard is malfunctioning and is required to be replaced, replace the entire palm-rest assembly.
The image below shows the palm-rest assembly after the pre-removal parts procedures have been performed, after performing the steps mentioned in the prerequisites, you are left with the palm-rest assembly.

Figure 45. Removing the palm-rest and keyboard assembly
Installing the palm-rest and keyboard assembly
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image shows the palm-rest and keyboard assembly.

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Figure 46. Installing the palm-rest and keyboard assembly
Steps Place the palm-rest and keyboard assembly on a flat surface.
Next steps 1. Install the power-adapter port. 2. Install the system board.
NOTE: The system board can be installed with the thermal heat-sink attached to it in order to simplify the procedure and preserve the thermal bond between the system board and the thermal heat-sink. 3. Install the touchpad. 4. Install the speakers. 5. Install the power button . 6. Install the I/O board. 7. Install the display assembly. 8. Install the coin-cell battery. 9. Install the heat-sink. 10. Install the fan. 11. Install the wireless card. 12. Install the M.2 2230 solid-state drive 13. Install the battery. 14. Install the base cover. 15. Follow the procedure in After working inside your computer.
Display assembly
Removing the display assembly
Prerequisites 1. Follow the procedure in Before working inside your computer.

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2. Remove the base cover. 3. Remove the wireless card.
About this task NOTE: The display assembly removal procedure is the same for both clamshell and 2-in-1 convertible chassis.
The following images indicate the location of the display assembly and provide a visual representation of the removal procedure.

Figure 47. Removing the display assembly

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Figure 48. Removing the display assembly

Figure 49. Removing the display assembly
Steps 1. Place the system on a flat surface such that the palm-rest and keyboard assembly lay flat on the surface. 2. Peel the adhesive tape that secures the display cable and remove antenna cable from routing guides. 3. Disconnect the wireless antenna cable from the wireless card. 4. Open the latch and disconnect the display cable from the connector on the system board. 5. Remove the four screws (M2.5×5) that secure the display hinges to the palm- rest and keyboard assembly. 6. Lift the left and right hinges in upward direction, away from the system. 7. Lift the palm-rest and keyboard assembly at an angle to free it from the hinges and remove it from the display assembly.

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Installing the display assembly
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task NOTE: The display assembly installation procedure is the same for both clamshell and 2-in-1 convertible chassis. NOTE: Ensure that the hinges are opened to the maximum before replacing the display assembly on the palm-rest and keyboard assembly.
The following images indicate the location of the display assembly and provide a visual representation of the installation procedure.

Figure 50. Installing the display assembly

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Figure 51. Installing the display assembly
Steps 1. Place the display assembly on a flat surface. 2. Slide the display assembly at an angle and place the system chassis under the hinges of the display assembly. 3. Gently press down on the display hinges to align the screw holes on the display hinges with the screw holes on the palm-rest
and keyboard assembly. 4. Replace the four screws (M2.5×5) to secure the display hinges to the palm-rest and keyboard assembly. 5. Connect the display cable to its connector on the system board. 6. Adhere the adhesive tape to secure the display cable.
Next steps 1. Install the wireless card. 2. Install the base cover. 3. Follow the procedure in After working inside your computer.
Display bezel
Removing the display bezel
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the display assembly.

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About this task The following image shows the display bezel and provide a visual representation of the removal procedure.

Figure 52. Removing the display bezel
Steps NOTE: The display bezel is adhered to the display panel with adhesive. Insert a plastic scribe into the recesses near both hinge caps to start the prying process to release the display bezel. Pry along the outside edge of the display bezel and work your way around the entire display bezel until the display bezel is separated from the display cover.
CAUTION: Carefully pry and remove the display bezel to minimize the risk of display panel damages. 1. Using a plastic scribe, pry open the recesses near the left and right hinges on the bottom edge of the display bezel. 2. Carefully work your way around the edges of the display bezel to release it from the display back cover. 3. Lift the display bezel from the display assembly.
NOTE: The display bezel is a consumable part and should be replaced with a new display bezel anytime it is removed from the system.
Installing the display bezel
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the display bezel and provides a visual representation of the installation procedure.

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Figure 53. Installing the display bezel
Steps NOTE: While installing the replacement display bezel for the models that are shipped with a camera, carefully peel off the piece of tape that is used to secure the camera shutter to the replacement display bezel. CAUTION: The tape covering the camera on the replacement display bezel must be peeled carefully. An abrupt peeling may remove the camera shutter from the display bezel and damage the camera shutter.
1. Align and place the display bezel on the display assembly. 2. Gently snap the display bezel into place.
Next steps 1. Install the display assembly. 2. Install the base cover. 3. Follow the procedure in After working inside your computer.
Display panel
Removing the display panel
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the display assembly. 4. Remove the display bezel.

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About this task The following images indicate the location of the display panel and provide a visual representation of the removal procedure.
Figure 54. Removing the display panel

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Figure 55. Removing the display panel

Figure 56. Removing the display panel

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Figure 57. Removing the display panel

Figure 58. Removing the display panel

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Steps
NOTE: The display panel is preassembled with the display brackets as a single service part. Do not pull the Stretch Release (SR) tapes and separate the brackets from the display panel.

1. Remove the six (M2.5×2.5) screws that secures the left and right hinges to the display back cover. NOTE: While removing the display panel, disengage the display panel tabs from the display cover before flipping it over
2. Lift up the lower portion of the LCD panel and slide downwards to access the display cable. 3. Peel the conductive tape on the display cable connector. 4. Open the latch and disconnect the cable from the connector on the display panel. 5. Lift the display panel away from the display back cover.
Installing the display panel
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following images indicate the location of the display panel and provides a visual representation of the installation procedure.

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Figure 59. Installing the display panel

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Figure 60. Installing the display panel

Figure 61. Installing the display panel

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Figure 62. Installing the display panel

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Figure 63. Installing the display panel
Steps 1. Place the display panel on flat and clean surface. 2. Connect the display cable to the connector on the display panel and close the latch. 3. Adhere the conductive tape to secure the display cable to the display panel. 4. Insert the display panel tabs into the slots on the display cover. 5. Replace the six (M2.5×2.5) screws to secure the display panel to the display back cover.
Next steps 1. Install the display bezel. 2. Install the display assembly. 3. Install the base cover. 4. Follow the procedure in After working inside your computer.

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Camera
Removing the camera
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the display assembly. 4. Remove the display bezel. 5. Remove the display panel.
About this task The following images indicate the location of the camera and provide a visual representation of the removal procedure.

Figure 64. Removing the camera
Steps 1. Disconnect the camera cable from the camera module.

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2. Lift to remove the camera module from the display back cover.
Installing the camera
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the display panel and provides a visual representation of the installation procedure.

Figure 65. Installing the camera
Steps 1. Align and replace the camera module on the display back cover. 2. Connect the camera cable to the camera module.
Next steps 1. Install the display panel. 2. Install the display bezel.

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3. Install the display assembly. 4. Install the base cover. 5. Follow the procedure in After working inside your computer.
eDP cable
Removing the eDP cable
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the display assembly. 4. Remove the display bezel. 5. Remove the display panel. 6. Remove the camera.
About this task The following image indicates the location of the eDP cable and provide a visual representation of the removal procedure.

Figure 66. Removing the eDP cable
Steps 1. Disconnect the eDP cable from the connector on the camera module. 2. Peel the conductive tape and unroute the eDP cable to release it from adhesive and lift the eDP cable from the display back
cover.

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Installing the eDP cable
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
About this task The following image indicates the location of the eDP cable and provides a visual representation of the installation procedure.

Figure 67. Installing the eDP cable
Steps 1. Connect the eDP cable to the connector on the camera module. 2. Adhere the eDP cable to the display back cover. 3. Adhere the conductive tape and route the eDP cable to the display back cover.
Next steps 1. Install the camera. 2. Install the display panel. 3. Install the display bezel. 4. Install the display assembly. 5. Install the base cover. 6. Follow the procedure in After working inside your computer.

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Display back cover
Removing the display back cover
Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the display assembly. 4. Remove the display bezel. 5. Remove the display panel. 6. Remove the camera. 7. Remove the eDP cable.
About this task The following image shows the display back cover and provide a visual representation of the removal procedure.

Figure 68. Removing the display back cover
Steps After performing the steps in the pre-requisites, we are left with the display back cover.
Installing the display back cover
Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

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About this task
The following image indicates the location of the display back cover and provides a visual representation of the installation procedure.

Figure 69. Installing the display back cover
Steps Place the display back cover on a clean and flat surface.
Next steps 1. Install the eDP cable. 2. Install the camera. 3. Install the display panel. 4. Install the display bezel. 5. Install the display assembly. 6. Install the base cover. 7. Follow the procedure in After working inside your computer.

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7
Software
This chapter details the supported operating systems along with instructions on how to install the drivers.
Operating system
Your Latitude 3450 supports the following operating systems: Windows 11 Pro Windows 11 Home Ubuntu 22.04 LTS, 64-bit
Drivers and downloads
When troubleshooting, downloading, or installing drivers, it is recommended that you read the Dell Knowledge Base article Drivers and Downloads FAQs 000123347.

Software

99

8

BIOS Setup

CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup. Certain changes can make your computer work incorrectly.
NOTE: Depending on the computer and its installed devices, the items that are listed in this section may or may not be displayed.
NOTE: Before you change the settings in BIOS Setup, it is recommended that you note down the original settings for future reference.
Use BIOS Setup for the following purposes: Get information about the hardware installed in your computer, such as the amount of RAM and the size of the storage
device. Change the system configuration information. Set or change a user- selectable option, such as the user password, type of hard drive installed, and enabling or disabling
base devices.

Entering BIOS setup program

About this task Turn on (or restart) your computer and press F2 immediately.

Navigation keys

NOTE: For most of the System Setup options, changes that you make are recorded but do not take effect until you restart the computer.

Table 30. Navigation keys Keys Up arrow Down arrow Enter
Spacebar Tab

Navigation Moves to the previous field. Moves to the next field. Selects a value in the selected field (if applicable) or follows the link in the field. Expands or collapses a drop-down list, if applicable. Moves to the next focus area.
NOTE: For the standard graphical user interface only.

Esc

Moves to the previous page until you view the main screen.

Pressing Esc in the main screen displays a message that

prompts you to save any unsaved changes and restart the

computer.

F12 One Time Boot menu
To enter the One Time Boot menu, turn on your computer, and then press F12 immediately.

100 BIOS Setup

NOTE: It is recommended to shut down the computer, if it is on.
The F12 One Time Boot menu displays the devices that you can boot from including the diagnostic option. The boot menu options are:
Removable Drive (if available) STXXXX Drive (if available)
NOTE: XXX denotes the SATA drive number.
Optical Drive (if available) SATA Hard Drive (if available) Diagnostics The boot sequence screen also displays the option to access System Setup.

View Advanced Setup options

About this task Some BIOS Setup options are only visible by enabling Advanced Setup mode, which is disabled by default.
NOTE: BIOS Setup options, including Advanced Setup options, are described inSystem setup options .
To enable Advanced Setup
Steps 1. Enter BIOS Setup.
The Overview menu appears. 2. Click the Advanced Setup option to move it to the ON mode.
Advanced BIOS Setup options are visible.

View Service options

About this task Service options are hidden by default and only visible by entering a hotkey command.
NOTE: Service options are described in System setup options .
To view Service options:
Steps 1. Enter BIOS Setup.
The Overview menu appears. 2. Enter the hotkey combination Ctrl +Alt + s to view the Service options.
Service options are visible.

System setup options

NOTE: Depending on your computer and its installed devices, the items that are listed in this section may or may not be displayed.

Table 31. System setup options–Overview menu

Overview

Latitude 3450

BIOS Version

Displays the BIOS version number.

BIOS Setup 101

Table 31. System setup options–Overview menu (continued)

Overview Service Tag Asset Tag Manufacture Date Ownership Date Express Service Code Ownership Tag Signed Firmware Update

Displays the Service Tag of the computer. Displays the Asset Tag of the computer. Displays the manufacture date of the computer. Displays the ownership date of the computer. Displays the Express Service Code of the computer. Displays the Ownership Tag of the computer. Displays whether the Signed Firmware Update is enabled on your computer. By default, the Signed Firmware Update option is enabled.

Battery Information Primary Battery Level Battery State Health AC Adapter
Battery Life Type

Displays the primary battery of the computer. Displays the battery level of the computer. Displays the battery state of the computer. Displays the battery health of the computer. Displays whether an AC adapter is connected. If connected, displays the type of AC adapter that is connected. Displays battery life type of the computer.

Processor Information Processor Type Maximum Clock Speed Minimum Clock Speed Current Clock Speed Core Count Processor ID Processor L2 Cache Processor L3 Cache Microcode Version Intel Hyper-Threading Capable 64-Bit Technology

Displays the processor type. Displays the maximum processor clock speed. Displays the minimum processor clock speed. Displays the current processor clock speed. Displays the number of cores on the processor. Displays the processor identification code. Displays the processor L2 Cache size. Displays the processor L3 Cache size. Displays the microcode version. Displays whether the processor is Hyper-Threading (HT) capable. Displays whether 64-bit technology is used.

Memory Information Memory Installed Memory Available Memory Speed Memory Channel Mode Memory Technology DIMM_SLOT 1 DIMM_SLOT 2

Displays the total computer memory installed. Displays the total computer memory available. Displays the memory speed. Displays single or dual channel mode. Displays the technology that is used for the memory. Displays DIMM_SLOT 1 of the computer. Displays DIMM_SLOT 2 of the computer.

Devices Information Panel Type

Displays the Panel Type of the computer.

102 BIOS Setup

Table 31. System setup options–Overview menu (continued)

Overview

Video Controller

Displays the video controller type of the computer.

Video Memory

Displays the video memory information of the computer.

Wi-Fi Device

Displays the wireless device information of the computer.

Native Resolution

Displays the native resolution of the computer.

Video BIOS Version

Displays the video BIOS version of the computer.

Audio Controller

Displays the audio controller information of the computer.

Bluetooth Device

Displays the Bluetooth device information of the computer.

LOM MAC Address

Displays the MAC address of the LAN on motherboard.

Pass Through MAC Address

Displays the MAC address of the video pass-through.

Cellular Device

Displays the cellular device information of the computer.

dGPU video controller

Displays the dGPU video controller information of the computer.

Table 32. System setup options–Boot Configuration menu

Boot Configuration

Boot Sequence

Boot Mode: UEFI only

Displays the boot mode of the computer.

Boot Sequence

Displays the boot sequence.

Secure Boot

Secure Boot is a method of guaranteeing the integrity of the boot path by performing additional validation of the operating system and PCI add-in cards. The computer stops booting to the operating system when a component is not authenticated during the boot process. Secure Boot can be enabled in BIOS setup or using management interfaces like Dell Command|Configure, but can only be disabled from BIOS setup.

Enable Secure Boot

Enables the computer to boot using only validated boot software.

By default, the Enable Secure Boot option is enabled.

For additional security, Dell Technologies recommends keeping the Secure Boot option enabled to ensure that the UEFI firmware validates the operating system during the boot process.

NOTE: For Secure Boot to be enabled, the computer is required to be in UEFI boot mode and the Enable Legacy Option ROMs option is required to be turned off.

Secure Boot Mode

Enables or disables the Secure Boot operation mode.
By default, the Deployed Mode is selected. NOTE: Deployed Mode should be selected for normal operation of Secure Boot.

Enable Microsoft UEFI CA

When disabled, the UEFI CA is removed from the BIOS UEFI Secure Boot database.
NOTE: When disabled, the Microsoft UEFI CA could render your computer unable to boot, computer graphics may not function, some devices may not function properly, and the computer could become unrecoverable.
By default, the Enable Microsoft UEFI CA option is enabled.
For additional security, Dell Technologies recommends keeping the Microsoft UEFI CA option enabled to ensure the broadest compatibility with devices and operating systems.

BIOS Setup 103

Table 32. System setup options–Boot Configuration menu (continued)

Boot Configuration Expert Key Management Enable Custom Mode

Enables or disables the keys in the PK, KEK, db, and dbx security key databases to be modified.
By default, the Enable Custom Mode option is disabled.

Custom Mode Key Management

Selects the custom values for expert key management. By default, the PK option is selected.

Table 33. System setup options–Integrated Devices menu

Integrated Devices

Date/Time

Date

Sets the computer date in MM/DD/YYYY format. Changes to the date format take effect immediately.

Time

Sets the computer time in HH/MM/SS 24-hour format. You can switch between a 12-hour and 24-hour clock. Changes to the time format take effect immediately.

Camera

Enable Camera

Enables the camera.
By default, the Enable Camera option is enabled. NOTE: Depending on the configuration ordered, the camera setup option may not be available.

Audio Enable Audio

References

• Microsoft Support
• Microsoft Support
• Dell - Dell Linux - Community Web

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