Dell OptiPlex 755 - Manual (Page 43)

8. Rotate the release tab downward to snap the card-retention latch into place.
9. Replace the computer cover (see Replacing the Computer Cover ), reconnect the computer and devices to electrical outlets, and then turn them on.
10. Uninstall the card's driver. See the documentation that came with the card for instructions.
11. 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.
12. 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.
Installing a PCI Card in the Riser-Card Cage
1. Follow the procedures in Before You Begin .
2. Remove the computer cover (see Removing the Computer Cover ).
3. If applicable, remove the card installed in the PCI3 connector on the system board.
4. 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. Gently pull on the handle and lift the riser-card cage up and away from the computer.
5. If you are installing a new card, remove the filler bracket to create an empty card-slot opening.
If you are replacing a card that is already installed in the computer, remove the card. If necessary, disconnect any cables connected to the card. Grasp
the card by its corners, and ease it out of its connector.
6. Prepare the new card for installation.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
1 riser-card cage
2 handle
NOTE: See the documentation that came with the card for information on configuring the card, making internal connections, or customizing it for
your computer.
CAUTION: Some network adapters automatically start the computer when they are connected to a network. To guard against electrical shock, be
sure to unplug your computer from its electrical outlet before installing any cards.