Dell OptiPlex GX280 - Manual (Page 224)

If you need a filler bracket, contact Dell .
NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the
computer. The brackets also keep dust and dirt out of your computer.
7. Lower the retention arm and press it into place.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
8. Replace the card cage (see step 8 of the previous procedure).
9. Close the computer cover, reconnect the computer and devices to electrical outlets, and turn them on.
After you open and close the cover, the chassis intrusion detector, if installed and enabled, causes the following
message to appear on the screen at the next computer start-up:
ALERT! Cover was previously removed.
10. Reset the chassis intrusion detector by changing Chassis Intrusion to On or On-Silent.
NOTE: If an admin password has been assigned by someone else, contact your network administrator for information
on resetting the chassis intrusion detector.
11. Remove the card's driver from the operating system.
12. If you removed a sound card:
a. Enter system setup , select Audio Controller, and change the setting to On.
b. Connect external audio devices to the audio connectors on the computer back panel.
13. If you removed an add-in network connector:
a. Enter system setup , select Network Controller, and change the setting to On.
b. Connect the network cable to the integrated connector on the computer back panel.
PCI Express Cards
Depending on your purchase, your computer supports one PCI Express x16 card and may support one PCI Express x1 card.
1 PCI Express x16 card 3 PCI Express x1 card slot
2 PCI Express x1 card
4 PCI Express x16 card slot