Dell OptiPlex 7440 All-In-One W11C, Owner'S Manual

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b) back cover
c) stand
3. Follow the procedure in After working inside your computer .
Intrusion switch
Removing the intrusion switch
1. Follow the procedure in Before working inside your computer .
2. Remove the:
a) stand
b) back cover
c) cable cover
d) speaker cover
e) system board shield
f) power supply unit
g) VESA mount bracket
3. To remove the intrusion switch:
a) Disconnect the intrusion switch cable from the connector on the system board [1].
b) Unthread the intrusion switch cable from the retention clips on the computer [2].
c) Remove the screw that secures the intrusion switch to the computer [3].
d) Slide and lift the intrusion switch away from the computer [4].
50 Disassembly and reassembly