Dell OptiPlex 9020 (Mid 2013) - Manual (Page 8)

6. input/output(I/O) panel
7. system fan
Removing the Cover
1. Follow the procedures in Before Working Inside Your Computer .
2. Turn the thumb screw in an anticlockwise direction, slide the cover towards you and lift the cover upwards to
remove it from the computer.
Installing the Cover
1. Place the cover on the computer.
2. Slide the computer cover towards the front of the chassis until it is fully engaged.
3. Tighten the screw in clockwise direction to secure the computer cover.
4. Follow the procedures in After Working Inside Your Computer .
Removing the Front Bezel
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover.
3. Pry the front bezel retention clip away from the chassis
4. Pry the front bezel away from the computer to release the front bezel from the chassis.
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