Dell OptiPlex 755 User Manual page 44

7. Press the release tab to raise the card-retention latch.
1 release tab
2 card-retention latch
3 card
8. Insert the card firmly into the card connector on the riser-card cage.
9. Lower the card-retention latch and press it into place, securing the card(s) in the computer.
10. 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 cards are fully seated in the connectors on the system board.
1 riser-card cage 3 riser cards (2)
2 slots 4 system board connectors (2)
11. Reconnect any cables that you removed in
12. Connect any cables that should be attached to the card.
NOTICE: Do not route card cables over or behind the cards. Cables routed over the cards can prevent the computer cover from closing properly or
cause damage to the equipment.
13. Replace the computer cover (see
14. If you installed a sound card, perform the following steps:
a. Enter system setup, select Audio Controller, and change the setting to Off (see
b. Connect external audio devices to the sound card's connectors. Do not connect external audio devices to the microphone, speaker/headphone,
4 card-edge connector
5 card connector
step 4.
Replacing the Computer Cover), reconnect the computer and devices to electrical outlets, and then turn them on.
Entering System Setup).