- Notes, cautions, and warnings
- Working on your computer
- Stands
- Removing and installing components
- Recommended tools
- Screw List
- Major components of your system
- Hard-drive assembly
- Hard-drive bracket
- Hard drive
- Solid-state drive in the hard-drive bay
- Solid-state drive daughter board
- Cover
- Memory module
- WLAN card
- Internal solid-state drive
- eMMC Storage module
- System fan
- Power button
- Coin-cell battery
- System board
- Heat-sink
- Replacing the chassis
- Software
- System setup
- Troubleshooting
- Getting help and contacting Dell
OptiPlex 7090 Ultra Service Manual
Screw List
The following table shows the screw list and the images for different components.
| Component | Screw type | Quantity | Image |
|---|---|---|---|
Power button | M2x3 | 1 |  |
System board | M2x3 M2x3 (captive screw) | 4 1 |
|
Hard-drive assembly (or non Hard-drive assembly) or SSD 2230/2280 cover | M2x3 | 1 | |
M.2 WLAN card | M2x3.5 | 1 |  |
M.2 2230 Solid-state drive or EMMC | M2x3.5 | 1 | |
M.2 (Option 2230 SSD or 2280 SSD) | M2x3.5 | 1 | |
Daughter board | M2x3.5 | 2 | |
M.2 Standoff | M3x2.4 | 1 |  |
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