Dell OptiPlex 9020 All In One (Mid 2013) - Manual (Page 22)

Installing the Intrusion Switch
1. Place the intrusion switch on the computer and tighten the screw to secure it to the chassis.
2. Thread the cable along the notches on the chassis and connect the intrusion-switch cable to the connector on the
system board.
3. Install:
a) system-board shield
b) VESA mount bracket
c) back cover
d) VESA stand
4. Follow the procedures in After Working Inside Your Computer .
Removing the Wireless Local Area Network (WLAN) Card
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the:
a) VESA stand
b) back cover
c) VESA mount bracket
d) system-board shield
3. Disconnect the WLAN antenna cables and remove the screws that secure the WLAN card to the system board.
Remove the WLAN card from the connector.
4. Flip the WLAN card and remove the screws that secure the WLAN card to the WLAN adapter. Remove the WLAN
card from the adapter.
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