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Manuals
OptiPlex 3090 Micro Service Manual
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Notes, cautions, and warnings
Working inside your computer
Safety instructions
Before working inside your computer
Safety precautions
Electrostatic discharge—ESD protection
ESD Field Service kit
After working inside your computer
Removing and installing components
Recommended tools
Screw list
Major components of your system
Side cover
Removing the side cover
Installing the side cover
Front bezel
Removing the front bezel
Installing the front bezel
2.5-inch hard-drive assembly
Removing the hard-drive assembly
Removing the hard-drive bracket
Installing the hard-drive bracket
Installing the 2.5 in. hard-drive assembly
Solid state drive
Removing the M.2 2230 PCIe solid-state drive
Installing the M.2 2230 PCIe solid-state drive
Removing the M.2 2280 PCIe solid-state drive
Installing the M.2 2280 PCIe solid-state drive
Fan assembly
Removing the fan assembly
Installing the fan assembly
WLAN card
Removing the WLAN card
Installing the WLAN card
Heat sink
Removing the heat sink
Installing the heat sink
Coin-cell battery
Removing the coin-cell battery
Installing the coin-cell battery
Memory modules
Removing the memory modules
Installing the memory modules
Speaker
Removing the speaker
Installing the speaker
Optional I/O modules (Type C/ HDMI/VGA/DP/Serial)
Removing optional I/O modules (Type C/ HDMI/VGA/DP/Serial)
Installing optional I/O modules (Type C/ HDMI/VGA/DP/Serial)
Processor
Removing the processor
Installing the processor
System board
Removing the system board
Installing the system board
Drivers and downloads
BIOS Setup
BIOS overview
Entering BIOS Setup
Navigation keys
F12 One Time Boot menu
System setup options
General options
System information
Video screen options
Security
Secure boot options
Intel Software Guard Extensions options
Performance
Power management
Post behavior
Virtualization support
Wireless options
Maintenance
System logs
Advanced configuration
SupportAssist System Resolution
Updating the BIOS
Updating the BIOS in Windows
Updating the BIOS in Linux and Ubuntu
Updating the BIOS using the USB drive in Windows
Updating the BIOS from the One-Time boot menu
System and setup password
Assigning a System Setup password
Deleting or changing an existing system password or setup password
Clearing BIOS (System Setup) and System passwords
Troubleshooting
Dell SupportAssist Pre-boot System Performance Check diagnostics
Running the SupportAssist Pre-Boot System Performance Check
System-diagnostic lights
Recovering the operating system
Backup media and recovery options
Wi-Fi power cycle
Getting help
Contacting Dell
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