Dell OptiPlex 755 User Manual page 41

1 card fully seated
2 card not fully seated
3 bracket within slot
4 bracket caught outside of slot
NOTE: If you are installing a PCI Express x16 card, ensure that the securing tab on the connector's release lever fits into the notch on the front
end of the card.
9. Gently rotate the release tab downward to move the card-retention latch into place to secure the cards.
1 release tab
2 card-retention latch
3 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.
10. Connect any cables that should be attached to the card.
11. Replace the computer cover (see
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
12. If you installed a sound card:
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,
or line-in connectors on the back or front panel.
13. If you installed a network adapter card and want to turn off the integrated network adapter:
a. Enter system setup, select Network Controller, and change the setting to Off (see
b. Connect the network cable to the connector on the network adapter card. Do not connect the network cable to the integrated network connector
4 card-edge connector
5 card connector
Replacing the Computer Cover), reconnect the computer and devices to electrical outlets, and then turn them on.
Entering System Setup).
Entering System Setup).