Dell OptiPlex 755 User Manual page 46

1 card retention latch
4 card-edge connector
4 If necessary, disconnect any cables connected to the card.
5 If you are removing the card permanently, install a filler bracket in the empty card-slot opening.
NOTE:
Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of
the computer. The brackets keep dust and dirt out of your computer and maintains the airflow that cools your
computer.
NOTICE:
To connect a network cable, first plug the cable into the network wall jack and then plug it into the
computer.
6 Replace the computer cover (see "Replacing the Computer Cover" on page 317), reconnect the
computer and devices to electrical outlets, and then turn them on.
7 Uninstall the card's driver. See the documentation that came with the card for instructions.
8 If you removed a sound card:
Enter system setup, select Audio Controller, and change the setting to On (see "System Setup" on
a
page 280).
Connect external audio devices to the audio connectors on the back panel of the computer.
b
46
Cards
2
1
2 alignment guide
5 card connector
3
4
5
6
3 card
6 release tab