Dell OptiPlex 9010 (Mid 2012) - Manual (Page 22)

Installing the Speaker
1. Place the speaker at the appropriate location on the chassis rear.
2. Press the speaker-securing tab and slide the speaker towards the left of the computer to secure it.
3. Connect the speaker cable to the system board.
4. Install the:
a. drive cage
b. front bezel
c. cover
5. Follow the procedures in After Working Inside Your Computer .
Removing the Power-Switch Cable
1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the:
a. cover
b. front bezel
c. drive cage
3. Disconnect the power-switch cable from the system board.
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