Dell OptiPlex 390 (Mid 2011) - Manual (Page 27)

8
Chassis Intrusion Switch
Removing the Chassis Intrusion Switch
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover .
3. Disconnect the intrusion-switch cable from the system board.
4. Slide the intrusion switch toward the chassis bottom and remove it from the
system board.
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