Dell OptiPlex GX270 - Manual (Page 134)

2. If necessary, disconnect any cables connected to the card.
3. Grasp the card by its top corners, and ease it out of its connector.
4. If you are removing the card permanently, install a filler bracket in the empty card-slot opening.
If you need a filler bracket, contact Dell .
5. Lower the retention arm and press it into place, securing the card(s) in the computer.
6. 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 enabled, causes the following message to appear on the screen at the next
computer start-up:
ALERT! Cover was previously removed.
7. Reset the chassis intrusion detector by changing Chassis Intrusion to Enabled or Enabled-Silent.
8. Remove the card's driver from the operating system.
9. If you removed a sound card:
a. Enter system setup, select Integrated Devices, and change the setting for Sound 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 Integrated Devices, and change the setting for Network Interface Card to On.
b. Connect the network cable to the integrated connector on the computer back panel.
Serial Port Adapters
1. Shut down the computer through the Start menu.
2. Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut
down your computer, turn them off now.
3. Disconnect any telephone or telecommunication lines from the computer.
4. Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board.
5. Open the computer cover .
Installing a Serial Port Adapter
1. Raise the retention arm.
2. Remove the filler bracket.
3. Slide the adapter bracket down over the card-slot opening, and lower the retention arm, ensuring that:
l The tops of all cards and filler brackets are flush with the alignment bar.
l The notch in the top of the adapter or filler bracket fits around the alignment guide .
4. Press the retention arm into place, securing the adapter in the computer.
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.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion
detector.
CAUTION: Before you begin any of the procedures in this section, follow the steps in " Safety Instructions ."
CAUTION: 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.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.