Dell OptiPlex 755 User Manual page 106

1 card retention latch 2 alignment guide 3 card
4 card-edge connector 5 card 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
7. Uninstall the card's driver. See the documentation that came with the card for instructions.
8. If you removed a sound card:
a. Enter system setup, select Audio Controller, and change the setting to On (see
b. Connect external audio devices to the audio connectors on the back panel of the computer.
9. If you removed a network-adapter card connector:
a. Enter system setup, select Network Controller, and change the setting to On (see
b. Connect the network cable to the integrated network connector on the back panel of the computer.
PS/2 Serial Port Adapter
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located 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.
Installing a PS/2 Serial Port Adapter
1. Follow the procedures in Before You
2. Remove the computer cover (see
3. Gently push the release tab on the card retention latch from the inside to pivot the latch open. The latch will remain in the open position
6 release tab
Replacing the Computer Cover), reconnect the computer and devices to electrical outlets, and then turn them on.
Begin.
Removing the Computer Cover).
System Setup).
System Setup).