- Notes, cautions, and warnings
- Working inside your computer
- Removing and installing components
- Recommended tools
- Screw list
- Major components of your computer
- Stand
- Cable cover—optional
- Back cover
- Hard drive
- Memory modules
- System-board shield
- Solid-state drive
- System fan
- Coin-cell battery
- Wireless card
- Camera assembly
- Bottom cover
- Power-supply unit
- Power-supply fan
- Heat sink
- Processor
- Rear-I/O bracket
- System board
- Speakers
- Power-button board
- Microphones
- Side I/O-board
- Audio board
- Antenna modules
- Display panel
- Middle frame
- Drivers and downloads
- System setup
- Troubleshooting
- Getting help and contacting Dell
OptiPlex 7490 All-In-One Service Manual
Major components of your computer
- Stand
- Bottom cover
- Heat sink
- Processor fan
- Processor
- Memory module
- M.2 2230/2280 solid-state drive
- Rear-I/O bracket
- Side-I/O board
- Speakers
- Audio board
- Display panel
- Display-assembly base
- Middle frame
- Camera-assembly door
- Power-supply unit (PSU)
- System board
- System-board shield
- Camera assembly
- Wireless card
- PSU fan
- Back cover
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