Installing The Intrusion Switch; Removing The Power And On-Screen Display (Osd) Buttons Board - Dell OptiPlex 7440 Owner's Manual

4. Perform the following instructions as shown in the illustration:
a. Remove the screw that secures the intrusion switch to the chassis [1].
b. Slide and lift the intrusion switch to remove it from the computer [2].

Installing the intrusion switch

1. Place the intrusion switch on the computer.
2. Tighten the screw to secure the intrusion switch to the chassis.
3. Thread the cable along the retention clips on the chassis.
4. Connect the intrusion-switch cable to the connector on the system board.
5. Install:
a. system-board shield
b. VESA mount bracket
c. back cover
d. stand
6. Follow the procedures in
Removing the power and On-Screen Display (OSD)
Buttons board
1. Follow the procedure in
2. Remove the:
a. stand
b. back cover
3. Perform the following steps as shown in the illustration:
a. Remove the screw to remove the metal plate that secures the power and OSD buttons board to
the computer [1].
b. Remove the power and OSD buttons board from the chassis [2].
c. Disconnect the cables from the power and OSD buttons board to release the board from the
computer [3, 4].
26
After Working Inside Your
Before Working Inside Your
Computer.
Computer.