Dell OptiPlex 3090 Ultra Service Manual page 4

Installing the cover......................................................................................................................................................99
Memory module............................................................................................................................................................... 100
Removing the memory module...............................................................................................................................100
Installing the memory module.................................................................................................................................. 101
WLAN card........................................................................................................................................................................ 102
Removing the WLAN card....................................................................................................................................... 102
Installing the WLAN card......................................................................................................................................... 103
Internal solid-state drive................................................................................................................................................ 104
Removing the solid-state drive.............................................................................................................................. 104
Installing the solid-state drive.................................................................................................................................105
eMMC Storage module.................................................................................................................................................. 107
Removing the eMMC storage module.................................................................................................................. 107
Installing the eMMC storage module.................................................................................................................... 107
System fan........................................................................................................................................................................ 108
Removing the system fan........................................................................................................................................ 108
Installing the system fan.......................................................................................................................................... 109
Power button.....................................................................................................................................................................110
Removing the power button.................................................................................................................................... 110
Installing the power button....................................................................................................................................... 111
Coin-cell battery............................................................................................................................................................... 113
Removing the coin-cell battery............................................................................................................................... 113
Installing the coin-cell battery................................................................................................................................. 114
System board.................................................................................................................................................................... 115
Removing the system board.................................................................................................................................... 115
Installing the system board...................................................................................................................................... 116
Heat-sink............................................................................................................................................................................ 118
Removing the heat-sink............................................................................................................................................ 118
Installing the heat-sink.............................................................................................................................................. 119
Replacing the chassis...................................................................................................................................................... 121
Chapter 4: Software.................................................................................................................. 122
Drivers and downloads................................................................................................................................................... 122
Chapter 5: System setup........................................................................................................... 123
BIOS overview.................................................................................................................................................................. 123
Entering BIOS setup program.......................................................................................................................................123
Navigation keys................................................................................................................................................................ 123
One time boot menu....................................................................................................................................................... 124
System setup options..................................................................................................................................................... 124
Updating the BIOS...........................................................................................................................................................133
Updating the BIOS in Windows.............................................................................................................................. 133
Updating the BIOS in Linux and Ubuntu...............................................................................................................133
Updating the BIOS using the USB drive in Windows........................................................................................ 133
Updating the BIOS from the F12 One-Time boot menu................................................................................... 134
System and setup password......................................................................................................................................... 135
Assigning a system setup password......................................................................................................................135
Deleting or changing an existing system setup password............................................................................... 135
Clearing BIOS (System Setup) and System passwords.........................................................................................136
4 Contents