Dell GX280DT - GX280 Desktop Computer User Manual page 106

2. Gently push the release tab on the retention lever.
3. If necessary, disconnect any cables connected to the adapter.
4. Grasp the serial port adapter bracket by its top corners, and ease it out of its connector.
5. 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.
6. 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.
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