Dell OptiPlex 9010 All In One (Mid 2012) - Manual (Page 13)

4. Lift the cover and remove it from the computer using the notches near the input/output panel.
Installing the Back Cover
1. Place the cover on the back of the computer using the notches near the input/output panel.
2. Tighten the screws to secure the back cover to the computer.
3. Install the VESA stand.
4. Follow the procedures in After Working Inside Your Computer .
Removing the Memory
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the:
a) VESA stand
b) back cover
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