Dell OptiPlex 755 - Manual (Page 49)

4. 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.
5. If you are installing a new PS/2 serial port adapter, remove the filler bracket to create an empty card-slot opening.
6. If you are replacing a PS/2 adapter that is already installed in the computer, remove the adapter.
7. If necessary, disconnect any cables connected to the adapter.
8. Align the PS/2 serial-port adapter bracket in the retention slot and press down firmly. Ensure that the adapter is fully seated in the slot.
9. 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.
10. Secure the card(s) by closing the card retention latch and snapping it into place.
11. Connect the adapter cable to the PS/2 serial port adapter connector (PS2/SERIAL2) on the system board (see System Board Components ).
12. Replace the riser-card cage:
a. Align the tabs in the side of the riser-card cage with the slots on the side of the computer, and slide the riser-card cage down into place.
b. Ensure that the riser-card connectors are fully seated in the connectors on the system board.
c. Rotate the riser-card cage handle to the down position.
13. Connect any disconnected cables.
14. Replace the computer cover (see Replacing the Computer Cover ).
15. Install any drivers required for the PS/2 serial port adapter.
Removing a PS/2 Serial Port Adapter From the Riser-Card Cage
1. Follow the procedures in Before You Begin .
2. Remove the computer cover (see Removing the Computer Cover ).
3. Remove the riser-card cage:
a. Check any cables connected to cards through the back panel openings. Disconnect any cables that will not reach the riser-card cage once they
are removed from the computer.
b. Rotate the riser-card cage handle up and gently pull on the handle and lift the riser-card cage up and away from the computer.
1 riser-card cage 2 handle 3 riser cards (2)
CAUTION: To guard against electrical shock, be sure to unplug your computer from its electrical outlet before installing any cards or adapters.
NOTICE: Do not route card cables over the cards. Cables routed over the cards can prevent the computer cover from closing properly or cause damage
to the equipment.