Page 8 - Right
Views of Latitude 5540 Right 1. microSD-card slot Reads from and writes to the microSD-card. 2. Universal audio jack Connect headphones or a headset (headphone and microphone combo). 3. USB 3.2 Gen 1 port Connect devices such as external storage devices and printers. Provides data transfer speeds up...
Page 9 - Left
Left 1. Thunderbolt 4.0 port with Power Delivery and DisplayPort Supports USB4, DisplayPort 1.4, Thunderbolt 4 and also enables you to connect to an external display using a display adapter.Provides data transfer rates of up to 40 Gbps for USB4 and Thunderbolt 4. NOTE: You can connect a Dell Docking...
Page 10 - Top
Top 1. Power button with optional fingerprint reader Press to turn on the computer if it is turned off, in sleep state, or in hibernate state. When the computer is turned on, press the power button to put the computer into sleep state; press and hold the powerbutton for 10 seconds to force shut-down...
Page 11 - Front
Front 1. Left microphone Provides digital sound input for audio recording and voice calls. 2. Infrared emitter (optional) Emits infrared light, which enables the infrared camera to sense and track motion. 3. Infrared camera (optional) Enhances security when paired with Windows Hello face authenticat...
Page 12 - Back; Bottom
Back 1. Nano-SIM card slot (optional) Insert a nano-SIM card to connect to a mobile broadband network. NOTE: Availability of the nano-SIM card slot depends on the region and configuration ordered. Bottom 1. Speakers Provide audio output. 2. Service Tag label The Service Tag is a unique alphanumeric ...
Page 16 - Dimensions and weight; Processor
Specifications of Latitude 5540 Dimensions and weight The following table lists the height, width, depth, and weight of your Latitude 5540. Table 3. Dimensions and weight Description Values Height: Front height 20.80 mm (0.82 in.) Rear height 22.80 mm (0.90 in.) Width 357.80 mm (14.09 in.) Depth 23...
Page 18 - Chipset; Operating system
Chipset The following table lists the details of the chipset supported by your Latitude 5540. Table 5. Chipset Description Values Chipset Integrated in the processor Processor 13 th Generation Intel Core i3/i5/i7 DRAM bus width 64-bit Flash EPROM 32 MB for non-vPro, 32 MB + 16 MB for vPro/vPro Esse...
Page 19 - External ports; Internal slots
Table 6. Memory specifications (continued) Description Values ● 16 GB, 2 x 8 GB, DDR5, 4800 MT/s, dual-channel ● 16 GB, 1 x 16 GB, DDR5, 4800 MT/s, single-channel ● 32 GB, 2 x 16 GB, DDR5, 4800 MT/s, dual-channel ● 64 GB, 2 x 32 GB, DDR5, 4800 MT/s, dual-channel External ports The following table li...
Page 20 - Ethernet; Wireless module; WWAN module
Ethernet The following table lists the wired Ethernet Local Area Network (LAN) specifications of your Latitude 5540. Table 9. Ethernet specifications Description Values Model number Intel I219-V/Intel I219-LM Transfer rate 10/100/1000 Mbps Wireless module The following table lists the Wireless Loca...
Page 22 - Audio; Storage
Audio The following table lists the audio specifications of your Latitude 5540. Table 12. Audio specifications Description Values Audio controller Realtek Waves, MaxxAudio 12.0 Stereo conversion Supported Internal audio interface High definition audio interface External audio interface Universal Au...
Page 23 - Keyboard function keys
Media-card reader The following table lists the media-card reader specifications of your Latitude 5540. Table 14. Media-card reader (standard offering) Media supported (Maximum capacity supported will vary by Flash Media Types) Media Supported Micro Secure Digital (mSD) Micro Secure Digital High Ca...
Page 24 - Keys with alternate characters
NOTE: Keyboard characters may differ depending on the keyboard language configuration. Keys that are used for tasks remain the same, regardless of the keyboard language. NOTE: You can define the primary behavior of function keys in the Function Key Behavior menu of the BIOS setup program. Table 16. ...
Page 25 - Touchpad; Power adapter
Table 17. Camera specifications (continued) Description Values Still image 2.07 megapixel Video 1920 x 1080 (FHD) at 30 fps Infrared camera resolution: Still image 0.23 megapixels Video 640 x 360 at 30 fps Diagonal viewing angle: Camera 80 degrees Infrared camera 86.6 degrees Touchpad The following ...
Page 26 - Battery
Table 19. Power adapter specifications (continued) Description Option one Option two Option three Input frequency 50 Hz–60 Hz 50 Hz–60 Hz 50 Hz–60 Hz Input current(maximum) 1.70 A 1.70 A 1.70 A Output current(continuous) ● 20 V/3 A (Continuous) ● 15 V/3 A (Continuous) ● 9 V/3 A (Continuous) ● 5 V/3 ...
Page 28 - Display
Table 20. Battery specifications (continued) Description Option one Option two Option three Option four is 20 minsfor AcceleratedCharge Coin-cell battery CR2032 CR2032 CR2032 CR2032 CAUTION: Operating and storage temperature ranges may differ among components, so operating or storing the device outs...
Page 29 - Sensor
Table 21. Display specifications (continued) Description Option one Option two Option three Vertical view angle 80 +/- degrees 80 +/- degrees 80 +/- degrees Pixel pitch 0.179 x 0.179 mm 0.179 x 0.179 mm 0.179 x 0.179 mm Power consumption(maximum) 4.60 W 4.60 W 4.50 W Anti-glare vs glossy finish Anti...
Page 30 - GPU—Discrete; External display support; Hardware security
GPU—Discrete The following table lists the specifications of the discrete Graphics Processing Unit (GPU) supported by your Latitude 5540. Table 25. GPU—Discrete Controller Memory size Memory type NVIDIA GeForce MX550 2 GB GDDR6 External display support The following table lists the external display...
Page 31 - Contactless smart-card reader
Smart-card reader Contactless smart-card reader This section lists the contactless smart-card reader specifications of your Latitude 5540. Table 28. Contactless smart-card reader specifications Title Description Dell ControlVault 3 contactless smart-card reader with NFC Felica Card Support Reader a...
Page 32 - Contacted smart-card reader
Table 29. Supported cards (continued) Manufacturer Card 1430 1L DESFire D8H iClass (Legacy) iClass SEOS NXP/Mifare Mifare DESFire 8K White PVC Cards Mifare Classic 1K White PVC Cards NXP Mifare Classic S50 ISO Card G&D idOnDemand - SCE3.2 144K SCE6.0 FIPS 80K Dual+ 1 K Mifare SCE6.0 nonFIPS 80K ...
Page 33 - Operating and storage environment; Dell Support policy
Table 30. Contacted smart-card reader specifications (continued) Title Description Dell ControlVault 3 smart-card reader readers into personal computerenvironments CCID driver compliance Common driver support for IntegratedCircuit Card Interface Device for OSlevel drivers. Yes Windows Certified Devi...
Page 34 - Using the privacy shutter; Dell Optimizer
To reduce the risk of eye strain, it is also recommended that you: ● Position the display at a comfortable viewing distance between 20 and 28 inches (50 and 70 cm) from your eyes. ● Blink frequently to moisten your eyes, wet your eyes with water, or apply suitable eye drops. ● Look away from your di...
Page 36 - Safety instructions; Before working inside your computer
Working inside your computer Safety instructions Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unlessotherwise noted, each procedure included in this document assumes that you have read the safety information that shippedwith y...
Page 37 - Safety precautions; Standby power; Electrostatic discharge—ESD protection
5. Remove any media card and optical disk from your computer, if applicable.6. Enter the service mode, if you are able to power on your computer. Service Mode Service Mode is used to cut-off power, without disconnecting battery cable from system board prior conducting repairs inthe computer. CAUTION...
Page 38 - ESD field service kit; Components of an ESD field service kit
Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher thanin 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...
Page 39 - ESD protection summary; Transporting sensitive components; BitLocker; Recommended tools
● 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 thenew part arrived in. The ESD bag should be folded over and tap...
Page 40 - Screw list
Screw list NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type isrestored when the component is replaced. NOTE: Some compu...
Page 41 - Major components of Latitude 5540
Table 32. Screw list (continued) Component Screw type Quantity Screw image Smart-card reader M2x2 2 Major components of Latitude 5540 The following image shows the major components of Latitude 5540. Working inside your computer 41
Page 44 - Removing and installing Customer
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 ...
Page 46 - Base cover; Removing the base cover
About this task Steps 1. Insert a pin into the release hole to release the SIM card tray.2. Push the pin to disengage the lock, and eject the SIM card tray.3. Slide the SIM card tray out of the slot on the computer.4. Align and place the SIM card in the dedicated slot on the SIM card tray, with the ...
Page 48 - Installing the base cover
Steps 1. Loosen the eight captive screws that secure the base cover to the palm-rest assembly.2. Using a plastic scribe, pry open the base cover from the recesses located in the U-shaped indents at the top edge of the base cover near the hinges. 3. Lift the base cover off the keyboard and palm-rest ...
Page 51 - Wireless card; Removing the WLAN card
Wireless card Removing the WLAN card Prerequisites 1. Follow the procedure in Before working inside your computer . 2. Remove the base cover . About this task The following image(s) indicate the location of the WLAN card and provides a visual representation of the removal procedure. Steps 1. Loosen ...
Page 52 - Installing the WLAN card
Installing the WLAN card Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following image(s) indicate the location of the WLAN card and provides a visual representation of the installation procedure. Steps 1...
Page 58 - Memory modules; Removing the memory module
Steps 1. Connect the antenna cables to the 5G WWAN card. The following table provides the antenna-cable color scheme for the 5G WWAN card that is supported by your computer. Table 35. Antenna-cable color scheme Connectors on the WWAN card Antenna-cable color Silkscreen marking D/G Black with a thin...
Page 59 - Installing the memory module
Steps 1. Using your fingertips, spread apart the securing clips on the memory-module slot until the memory module pops up.2. Slide and remove the memory module from the memory-module slot on the system board. NOTE: Repeat step 1 and step 2 if there are more than one memory module installed on your c...
Page 60 - Removing the M.2 2230 solid-state drive from Slot 1
Steps 1. Align the notch on the memory module with the tab on the memory-module slot.2. Slide the memory module firmly into the slot at an angle and press the memory module down until it clicks into place. NOTE: If you do not hear the click, remove the memory module and reinstall it. Next steps 1. I...
Page 61 - Installing the M.2 2230 solid-state drive in Slot 1
Steps 1. Remove the two screws (M2x3) that secure the solid-state drive thermal shield to the palm-rest assembly.2. Lift the solid-state drive thermal shield off the palm-rest assembly.3. Remove the screw (M2x3) that secures the M.2 2230 solid-state drive to the solid-state drive bracket and palm-re...
Page 63 - Removing the M.2 2280 solid-state drive from Slot 1
Removing the M.2 2280 solid-state drive from Slot 1 Prerequisites 1. Follow the procedure in Before working inside your computer . 2. Remove the SIM card . 3. Remove the base cover . About this task The following image(s) indicate the location of the M.2 2280 solid-state drive in Slot 1 and provides...
Page 64 - Installing the M.2 2280 solid-state drive in Slot 1
Installing the M.2 2280 solid-state drive in Slot 1 Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following image(s) indicate the location of the M.2 2280 solid-state drive in Slot 1 and provides a visual...
Page 65 - Removing the M.2 2230 solid-state drive from Slot 2
Next steps 1. Install the base cover . 2. Install the SIM card . 3. Follow the procedure in After working inside your computer . Removing the M.2 2230 solid-state drive from Slot 2 Prerequisites 1. Follow the procedure in Before working inside your computer . 2. Remove the SIM card . 3. Remove the b...
Page 66 - Installing the M.2 2230 solid-state drive in Slot 2
2. Slide and lift the M.2 2230 solid-state drive off the solid-state drive slot. Installing the M.2 2230 solid-state drive in Slot 2 Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following image(s) indica...
Page 67 - Fan; Removing the fan; Installing the fan
2. Install the SIM card . 3. Follow the procedure in After working inside your computer . Fan Removing the fan CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer . 2. Remove the SI...
Page 69 - Removing and installing Field Replaceable; Rechargeable Li-ion battery precautions; Removing the battery
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,...
Page 71 - Installing the battery
Steps 1. Disconnect the battery cable from the system board (if not disconnected earlier).2. Loosen the five captive screws that secure the battery to the palm-rest assembly.3. Lift the battery off the palm-rest assembly.4. Flip the battery and peel the tape that adheres the battery cable to the bat...
Page 73 - Assembly inner frame; Removing the assembly-inner frame
Assembly inner frame Removing the assembly-inner frame CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer . 2. Remove the SIM card . 3. Remove the base cover . 4. Remove the batter...
Page 74 - Installing the assembly-inner frame
Figure 2. Inner frame removal Steps 1. Remove the antenna cables from the routing guides on the palm-rest assembly.2. Disconnect the speaker cable from the system board.3. Remove the speaker cables from the routing guides on the palm-rest assembly.4. Remove the twelve screws (M2x3) that secure the a...
Page 76 - Removing the speakers
Steps 1. Align the screw holes on the assembly-inner frame with the screw holes on the system board and the palm-rest assembly.2. Replace the twelve screws (M2x3) that secure the assembly-inner frame to the palm-rest assembly.3. Connect the speaker cable to the system board.4. Route the speaker cabl...
Page 77 - Installing the speakers
About this task The following images indicate the location of the speakers and provide a visual representation of the removal procedure. Steps 1. Disconnect the speaker cable from the system board.2. Remove the speaker cables from the routing guides on the palm-rest assembly.3. Lift the right and le...
Page 78 - Removing the coin-cell battery
Steps 1. Using the alignment posts, place the left and right speakers into their slots on the palm-rest assembly.2. Route the speaker cable through the routing guides on the palm-rest assembly.3. Connect the speaker cable to the system board. Next steps 1. Install the base cover . 2. Install the SIM...
Page 79 - Installing the coin-cell battery
Steps 1. Disconnect the coin-cell battery cable from the system board.2. Peel the coin-cell battery, along with its cable, off the palm-rest assembly. Installing the coin-cell battery Prerequisites If you are replacing a component, remove the existing component before performing the installation pro...
Page 80 - Heat sink
Steps 1. Adhere the coin-cell battery on to the coin-cell battery slot on the palm-rest assembly.2. Connect the coin-cell battery cable to the connector on the system board. Next steps 1. Install the assembly-inner frame . 2. Install the battery . 3. Install the base cover . 4. Install the SIM card ...
Page 83 - Installing the heat sink (Integrated GPU)
Steps 1. Loosen the four captive screws that secure the heat sink to the system board. NOTE: Loosen the captive screws in the reverse sequential order mentioned on the heat sink [4 > 3 > 2 > 1]. NOTE: The number of screws varies depending on the configuration ordered. 2. Remove the screw (M...
Page 84 - System board; Removing the system board
Steps 1. Place the heat sink on the system board.2. Tighten the four captive screws that secure the heat sink to the system board. NOTE: Tighten the captive screws in the sequential order mentioned on the heat sink [1 > 2 > 3 > 4]. NOTE: The number of screws varies depending on the configur...
Page 87 - Installing the system board
6. Disconnect the sensor board-cable from the connector on the system board.7. Disconnect the display cable from the connector on the system board.8. Remove the display cable from the routing guides on the system board.9. Disconnect the fan cable from the connector on the system board.10. Open the l...
Page 90 - Power button; Removing the power button
Next steps 1. Install the assembly-inner frame . 2. Install the battery . 3. Install the heat sink (discrete GPU) or heat sink (integrated GPU) , as applicable. 4. Install the M.2 2230 solid-state drive in Slot 2 , if applicable. 5. Install the M.2 2230 or M.2 2280 solid-state drive in Slot 1, as ap...
Page 91 - Installing the power button
Steps 1. Remove the two (M2x2.5) screws that secure the power button to the palm-rest assembly.2. Lift the power button off the palm-rest assembly. Installing the power button CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are repla...
Page 92 - Removing the power button with optional fingerprint reader
Steps 1. Align and place the power button on the palm-rest assembly.2. Replace the two (M2x2.5) screws to secure the power button to the palm-rest assembly. Next steps 1. Install the system board . 2. Install the assembly-inner frame . 3. Install the heat sink (discrete GPU) or heat sink (integrated...
Page 93 - Installing the power button with optional fingerprint reader
5. Remove the 4G WWAN card or 5G WWAN card , as applicable. 6. Remove the WLAN card . 7. Remove the memory modules . 8. Remove the M.2 2230 or M.2 2280 solid-state drive from Slot 1, as applicable. 9. Remove the M.2 2230 solid-state drive from Slot 2 , if applicable. 10. Remove the heat sink (discre...
Page 94 - Removing the keyboard
Steps 1. Align and place the power button on the palm-rest assembly.2. Replace the two (M2x2.5) screws to secure the power button to the palm-rest assembly. Next steps 1. Install the system board . 2. Install the assembly-inner frame . 3. Install the heat sink (discrete GPU) or heat sink (integrated...
Page 96 - Installing the keyboard
Steps 1. Open the latch and disconnect the keyboard cable from the touchpad.2. Open the latch and disconnect the keyboard-backlight cable from the touchpad.3. Remove the twenty one screws (M2x2) that secure the keyboard bracket to the palm-rest assembly.4. Lift the keyboard bracket off the palm-rest...
Page 98 - Display assembly; Removing the display assembly
2. Replace the ten screws (M2x2) to secure the keyboard to the keyboard bracket.3. Turn the keyboard bracket over.4. Align and place the keyboard bracket on the palm-rest assembly.5. Replace the twenty one screws (M2x2) that secure the keyboard bracket to the palm-rest assembly.6. Connect the keyboa...
Page 101 - Installing the display assembly
Installing the display assembly CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following images indicate the lo...
Page 103 - Display bezel; Removing the display bezel; Installing the display bezel
Display bezel Removing the display bezel CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer . 2. Remove the SIM card . 3. Remove the base cover . 4. Remove the 4G WWAN card or 5G W...
Page 104 - Display panel; Removing the display panel
Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following images indicate the location of the display bezel and provide a visual representation of the installation procedure. Steps 1. Align and place the di...
Page 107 - Installing the display panel
Installing the display panel CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following images indicate the locat...
Page 110 - Camera module; Removing the camera module
Camera module Removing the camera module CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer . 2. Remove the SIM card . 3. Remove the base cover . 4. Remove the 4G WWAN card or 5G W...
Page 111 - Installing the camera module
Steps 1. Peel the tape that secures the camera cable to the to the display back cover.2. Disconnect the camera cable from the camera.3. Carefully pry up the camera module starting from the prying point at the bottom edge of the camera module.4. Lift the camera module from the display back cover. Ins...
Page 112 - Display hinges; Removing the display hinges
Steps 1. Align and place the camera module into the slot on the display back cover.2. Connect the camera module cable to the connector on the camera module.3. Adhere the tape to secure the camera cable to the camera. Next steps 1. Install the display panel . 2. Install the display bezel . 3. Install...
Page 113 - Installing the display hinges
Steps 1. Remove the screw (M2.5x3.5) that secures the right hinge to the display back cover.2. Lift and remove the right hinge from the display back cover.3. Remove the screw (M2.5x3.5) that secures the left hinge to the display back cover.4. Lift and remove the left hinge from the display back cove...
Page 114 - Display back cover; Removing the display back cover
Steps 1. Align the screw hole on the left hinge with the screw hole on the display back cover.2. Replace the screw (M2.5x3.5) that secures the left hinge to the display back cover.3. Align the screw hole on the right hinge with the screw hole on the display back cover.4. Replace the screw (M2.5x3.5)...
Page 115 - Installing the display back cover
7. Remove the display bezel . 8. Remove the display panel . About this task The following images indicate the location of the display back cover and provide a visual representation of the removalprocedure. Steps After performing the steps in the pre-requisites, we are left with the display back cove...
Page 116 - Display cable; Removing the display cable
Steps Place the display back cover on a flat surface. Next steps 1. Install the display panel . 2. Install the display bezel . 3. Install the display assembly . 4. Install the WLAN card . 5. Install the 4G WWAN card or 5G WWAN card , as applicable. 6. Install the base cover . 7. Install the SIM card...
Page 117 - Installing the display cable
About this task The following images indicate the location of the display cable and provide a visual representation of the removal procedure. Steps 1. Peel the tape that secures the display cable to the display back cover.2. Disconnect the display cable from the camera module.3. Peel the display cab...
Page 118 - Sensor board; Removing the sensor board
Steps 1. Connect the display cable to the connector on the camera.2. Adhere the display cable to the display back cover.3. Adhere the tape that secures the display cable to the display back cover. Next steps 1. Install the display panel . 2. Install the display bezel . 3. Install the display assembl...
Page 119 - Installing the sensor board
7. Remove the display bezel . 8. Remove the display panel . About this task The following images indicate the location of the sensor board and provide a visual representation of the removal procedure. Steps 1. Remove the sensor-board cable from the routing guides on the display back cover.2. Lift th...
Page 120 - Removing the fingerprint reader (Optional)
Steps 1. Place the sensor board on its slot on the display back cover.2. Route the sensor-board cable through the routing guides on the display back cover. Next steps 1. Install the display panel . 2. Install the display bezel . 3. Install the display assembly . 4. Install the WLAN card . 5. Install...
Page 121 - Installing the fingerprint reader (Optional)
About this task The following image(s) indicate the location of the fingerprint reader and provides a visual representation of the removalprocedure. Steps 1. Lift the latch and disconnect the fingerprint-reader cable from the connector on the USH board.2. Move the fingerprint-reader cable away from ...
Page 123 - Removing the smart-card reader; Installing the smart-card reader
Smart-card reader Removing the smart-card reader CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer . 2. Remove the SIM card . 3. Remove the base cover . 4. Remove the battery . 5....
Page 124 - Dummy SIM-card slot filler; Removing the dummy SIM-card slot filler
About this task The following images indicate the location of the smart card reader and provide a visual representation of the installationprocedure. Steps 1. Align and place the smart-card reader on its slot on the palm-rest assembly.2. Replace the two screws (M2x2) that adheres the smart-card read...
Page 125 - Installing the dummy SIM-card slot filler
10. Remove the assembly-inner frame . 11. Remove the system board . NOTE: The system board can be removed with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board and heat sink. 12. Remove the display assembly . 13. Remove the smart-card r...
Page 126 - Removing the palm-rest assembly
Steps 1. Place the dummy SIM-card slot filler into its compartment on the palm rest. NOTE: Ensure that the dummy SIM-card slot filler is aligned with the ribs on the palm-rest assembly. 2. Press the dummy SIM-card slot filler until it clicks into place and ensure it fits securely into the SIM card s...
Page 128 - Installing the palm-rest assembly
Steps After performing the steps in the pre-requisites, we are left with the palm-rest assembly. Installing the palm-rest assembly CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing compone...
Page 130 - Drivers and downloads
Software This chapter details the supported operating systems along with instructions on how to install the drivers. Operating system Your Latitude 5540 supports the following operating systems: ● Windows 11 Home, 64-bit ● Windows 11 Pro, 64-bit ● Windows 11 Pro downgrade (Win 10 Pro image FI + Win ...
Page 131 - BIOS setup; Entering BIOS setup program; Navigation keys
BIOS setup CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup program. Certain changes can make your computer work incorrectly. NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not be displayed. NOTE: Be...
Page 132 - System setup options
The one-time boot menu displays the devices that you can boot from including the diagnostic option. The boot menu optionsare: ● Removable Drive (if available) ● STXXXX Drive (if available) NOTE: XXX denotes the SATA drive number. ● Optical Drive (if available) ● SATA Hard Drive (if available) ● Diag...
Page 143 - Updating the BIOS
Updating the BIOS Updating the BIOS in Windows About this task 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 thesystem will ask for this...
Page 144 - Updating the BIOS from the F12 One-Time boot menu; System and setup password
Updating the BIOS from the F12 One-Time boot menu Update your computer BIOS using the BIOS update.exe file that is copied to a FAT32 USB drive and booting from the F12One-Time boot menu. About this task CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the sys...
Page 146 - Clearing CMOS settings; Clearing BIOS (System Setup) and System passwords
Clearing CMOS settings About this task CAUTION: Clearing CMOS settings will reset the BIOS settings on your computer. Steps 1. Remove the base cover . 2. Disconnect the battery cable from the system board.3. Remove the coin-cell battery . 4. Wait for one minute.5. Replace the coin-cell battery . 6. ...
Page 148 - Running the SupportAssist Pre-Boot System Performance Check
Dell SupportAssist Pre-boot System PerformanceCheck diagnostics About this task SupportAssist diagnostics (also known as system diagnostics) performs a complete check of your hardware. The DellSupportAssist Pre-boot System Performance Check diagnostics is embedded with the BIOS and is launched by th...
Page 149 - How to invoke LCD BIST Test
Table 54. LED error codes Blinking Pattern Possible Problem Amber White 2 1 CPU Failure 2 8 LCD Power Rail Failure 1 1 TPM Detection Failure 2 4 Memory/RAM failure 4. If there is no failure with the system board, the LCD will cycle through the solid color screens described in the LCD-BIST section f...
Page 150 - System-diagnostic lights
System-diagnostic lights Power and battery-status light The power and battery-status light indicates the power and battery status of the computer. These are the power states: Solid white: Power adapter is connected and the battery has more than 5% charge. Amber: Computer is running on battery and th...
Page 151 - Recovering the operating system; Backup media and recovery options; Drain residual flea power (perform hard reset)
Recovering the operating system When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts DellSupportAssist OS Recovery. Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows oper...
Page 153 - Contacting Dell
Getting help and contacting Dell Self-help resources You can get information and help on Dell products and services using these self-help resources: Table 56. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com Tips Contact Support In ...
