Dell OptiPlex 160L - Manual (Page 7)

Replacing the I/O Panel
1. Attach the sound/USB cable to the new I/O panel.
2. Insert the I/O panel into the I/O cage and replace the screws that you removed in step 4 .
3. Reattach the front panel to the side hinges, and then rotate it until it snaps onto the front of the computer.
4. Reinstall the hard drive(s).
1 screws (2)
2 I/O panel
3 I/O panel cage
1 side hinges
2 front panel