Dell OptiPlex 760 - Manual (Page 114)

8. Connect the adapter cable to the PS/2 serial port adapter connector (PS2/SERIAL2) on the system board (see System Board Components ).
9. Replace the computer cover (see Replacing the Computer Cover .
Removing a PS/2 Serial Port Adapter
1. Follow the procedures in Working on Your Computer .
2. Remove the computer cover (see Removing the Computer Cover ).
3. Gently lift the release tab on the card retention latch from the inside to pivot the latch open. Pivot the latch until it snaps into the open position.
4. Disconnect the PS/2 serial-port cable from the system board (see System Board Components ).
5. Ease the PS/2 serial-port adapter bracket out of its retention slot.
6. If you are removing the adapter permanently, install a filler bracket in the empty card-slot opening.
7. Before you close the card retention mechanism, ensure that:
l The tops of all cards and filler brackets are flush with the alignment bar.
l The notch in the top of the card or filler bracket fits around the alignment guide.
8. Secure any remaining card(s) by closing the card retention latch and snapping it into place.
9. Replace the computer cover (see Replacing the Computer Cover ).
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NOTE: See the documentation for the PS/2 serial port adapter for information about the cable connections.
NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets keep dust
and dirt out of your computer and maintain the airflow that cools your computer.