Dell OptiPlex 9020 (Mid 2013) - Manual (Page 22)

Installing the Input/Output (I/O) Panel
1. Insert the I/O panel into the slot on the chassis front.
2. Slide the I/O panel to secure it to the chassis.
3. Tighten the screw to secure the I/O panel to the chassis.
4. Connect the I/O panel or FlyWire cable and audio cable to the system board.
5. Thread the I/O panel or FlyWire cable into the fan-shelter clip.
6. Install the:
a) drive cage
b) optical drive
c) front bezel
d) cover
7. Follow the procedures in After Working Inside Your Computer .
Removing the Power Supply
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the:
a) cover
b) front bezel
c) optical drive
d) drive cage
3. Disconnect the 8-pin power cables from the system board.
4. Disconnect the 4–pin power cables from the system board.
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