Dell OptiPlex 7020 (Mid 2014) - Manual (Page 23)

Installing the Power Switch
1. Slide the power switch in through the front of the computer.
2. Connect the power-switch cable to the system board.
3. Install the:
a. drive cage
b. optical drive
c. front bezel
d. cover
4. Follow the procedures in After Working Inside Your Computer.
Removing the Input/Output (I/O) Panel
1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the:
a. cover
b. optical drive
c. drive cage
d. front bezel
3. Disconnect the I/O panel or FlyWire cable and the audio cable from the system board.
23