Dell OptiPlex 755 - Manual (Page 46)

10. Replace the computer cover (see Replacing the Computer Cover ), reconnect the computer and devices to electrical outlets, and then turn them on.
11. Uninstall the card's driver. See the documentation that came with the card for instructions.
12. If you removed a sound card:
a. Enter system setup, select Audio Controller, and change the setting to On (see Entering System Setup ).
b. Connect external audio devices to the audio connectors on the computer back panel.
13. If you removed a network adapter card:
a. Enter system setup, select Network Controller, and change the setting to On (see Entering System Setup ).
b. Connect the network cable to the integrated network connector on the back panel of the computer.
PS/2 Serial Port Adapter
Installing a PS/2 Serial Port Adapter
1. Follow the procedures in Before You Begin .
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. Remove the filler bracket (if applicable).
5. 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.
1 riser-card cage 3 riser cards (2)
2 slots 4 system board connectors (2)
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your
computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
NOTE: See the documentation that came with the adapter for information on configuring the adapter, making internal connections, or customizing
it for your computer.