Dell OptiPlex XE4 Tower Service Manual page 5

Removing the SD card reader.................................................................................................................................. 76
Installing the SD card reader.....................................................................................................................................77
Optional modules............................................................................................................................................................... 78
Removing optional DisplayPort module.................................................................................................................. 78
Installing optional DisplayPort module.................................................................................................................... 79
Removing optional VGA module.............................................................................................................................. 80
Installing optional VGA module..................................................................................................................................81
Removing optional HDMI module............................................................................................................................ 82
Installing optional HDMI module...............................................................................................................................83
Removing optional Serial module.............................................................................................................................84
Installing optional Serial module............................................................................................................................... 84
Removing optional Type-C module......................................................................................................................... 86
Installing optional Type-C module........................................................................................................................... 86
Removing optional Thunderbolt 4 module.............................................................................................................88
Installing optional Thunderbolt4 module................................................................................................................ 90
Removing internal antenna........................................................................................................................................92
Installing internal antenna..........................................................................................................................................92
System board..................................................................................................................................................................... 93
Removing the system board..................................................................................................................................... 93
Installing the system board....................................................................................................................................... 98
Chapter 3: Drivers and downloads.............................................................................................. 104
Chapter 4: BIOS setup............................................................................................................... 105
Entering BIOS setup program.......................................................................................................................................105
Navigation keys................................................................................................................................................................105
One time boot menu....................................................................................................................................................... 105
System setup options..................................................................................................................................................... 106
Updating the BIOS........................................................................................................................................................... 115
Updating the BIOS in Windows............................................................................................................................... 115
Updating the BIOS in Linux and Ubuntu............................................................................................................... 115
Updating the BIOS using the USB drive in Windows.........................................................................................115
Updating the BIOS from the F12 One-Time boot menu....................................................................................116
System and setup password.......................................................................................................................................... 117
Assigning a system setup password.......................................................................................................................117
Deleting or changing an existing system setup password................................................................................ 117
Clearing CMOS settings................................................................................................................................................. 118
Clearing BIOS (System Setup) and System passwords..........................................................................................118
Chapter 5: Troubleshooting........................................................................................................ 119
Dell SupportAssist Pre-boot System Performance Check diagnostics...............................................................119
Running the SupportAssist Pre-Boot System Performance Check............................................................... 119
Power-Supply Unit Built-in Self-Test .........................................................................................................................119
Diagnostic LED behavior................................................................................................................................................ 120
Recovering the operating system.................................................................................................................................121
Real Time Clock-RTC reset.........................................................................................................................................121
Backup media and recovery options........................................................................................................................... 122
WiFi power cycle..............................................................................................................................................................122
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