Dell OptiPlex 3010 (Mid 2012) - Manual (Page 24)

4. Pry and remove the system fan away from the four grommets securing it to the back of the computer.
Installing the System Fan
1. Place the system fan in the chassis.
2. Pass the four grommets through the chassis and slide outward along the grooves to secure them in place.
3. Connect the fan cable to the system board.
4. Install the cover .
5. Follow the procedures in After Working Inside Your Computer .
Removing the Input/Output Panel
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover .
3. Remove the front bezel .
4. Disconnect the Input/Output Panel and FlyWire cable from the system board.
5. Unthread the Input/Output Panel and FlyWire cable from the clip on the computer.
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