Dell GX280DT - GX280 Desktop Computer User Manual page 205

1. Follow the procedures in "Before You
2. Disconnect the serial adapter cable from the connector on the system board.
3. Raise the retention arm.
4. Lift and remove the serial port adapter bracket.
5. If you are removing the adapter permanently, install a filler bracket in the empty card-slot opening.
If you need a filler bracket, contact
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.
NOTICE: To connect a network cable, first plug the cable into the network wall jack, and then plug it into the computer.
7. 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.
8. Reset the chassis intrusion detector
NOTE: If an admin password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion
detector.
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Begin."
Dell.
by changing Chassis Intrusion to On or On-Silent.