Dell OptiPlex SX280 User Manual
Page 80
5.
Connect the speaker cable to the connector on the system board.
6.
Replace the computer cover.
7.
Replace the cable cover, if used.
8.
Connect your computer to the adapter cable, and connect devices to electrical outlets, and turn them on.
After you replace 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.
9.
Reset the chassis intrusion detector
by changing the Chassis Intrusion option to On or On-Silent.
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NOTICE:
To connect a network cable, first plug the cable into the network wall jack, and then plug it into the computer.
NOTE:
If an admin password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion
detector.