Dell OptiPlex GX280 - Manual (Page 232)

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.
6. Lower the retention arm and press it into place.
7. Replace the card cage as described in step 8 the preceding section.
NOTE: If an admin password has been assigned by someone else, contact your network administrator for information
on resetting the chassis intrusion detector.
8. Remove the card's driver from the operating system.
9. 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.
10. 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.
Serial Port Adapters
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions 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.
NOTE: The serial port adapter for your small-desktop computer also includes two PS/2 connectors.
Installing a Serial Port Adapter
1. Follow the procedures in " Before You Begin ."
2. Remove the card cage (see " Installing a PCI Card ").
3. Press the lever on the retention arm and raise the retention arm.