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NOTE: To install a 3.5-inch hard drive, install a 3.5 inch HDD0 hard-drive cage and to install a 2.5–
inch hard drive, install a 2.5 inch HDD0/1 hard-drive cage.
Chassis Intrusion Switch
The chassis intrusion switch detects any unauthorized access into the interior of your system and
provides an indication of the same. This switch is activated as soon as the system cover is removed and
access is made to the interior of your system.
Removing The Chassis Intrusion Switch
CAUTION: Many repairs may only be done by a certified service technician. You should only
perform troubleshooting and simple repairs as authorized in your product documentation, or as
directed by the online or telephone service and support team. Damage due to servicing that is
not authorized by Dell is not covered by your warranty. Read and follow the safety instructions
that came with the product.
1. Turn off the system, including any attached peripherals, and disconnect the system from the
electrical outlet and peripherals.
2. Open the system.
3. Disconnect the chassis intrusion switch cable from the system board.
4. Unwind the wire from the cable-routing hook.
5. Slide the chassis intrusion switch out of the chassis intrusion switch slot and lift it away from the
chassis.
Figure 7. Removing and Installing the Chassis Intrusion Switch
1. chassis intrusion switch cable 2. chassis intrusion switch
3. chassis intrusion switch slot 4. cable-routing hook
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