Replacing the chassis intrusion switch, Resetting the chassis intrusion detector – Dell Precision T7400 (Late 2007) User Manual
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Securing Your Computer
Replacing the Chassis Intrusion Switch
1 Gently slide the chassis intrusion switch into its slot and reconnect the
cable to the system board.
2 Replace the computer cover (see "Replacing the Computer Cover" on
NOTICE:
To connect a network cable, first plug the cable into the network port or
device and then plug it into the computer.
3 Connect your computer and devices to electrical outlets, and turn them
on.
Resetting the Chassis Intrusion Detector
1 Turn on (or restart) your computer.
2 When the blue DELL™ logo appears, press <F2> immediately.
If you wait too long and the operating system logo appears, continue to
wait until you see the Microsoft
®
Windows
®
desktop. Then shut down
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