Dell OptiPlex 9020 (Mid 2013) - Manual (Page 19)

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:
a) cover
b) front bezel
c) drive cage
3. Disconnect the audio cable and USB cable from the I/O panel.
4. Remove the screws and slide the I/O panel towards the left of the computer to release it and pull it out of the
computer.
5. Remove the screws that secure the I/O panel to the bracket.
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