Dell OptiPlex GX110 - Manual (Page 57)

To remove the chassis intrusion switch, perform the following steps:
1. Remove the drive shelf .
2. Remove the power supply .
3. Remove the control panel .
4. Disconnect the chassis intrusion switch cable connector from the control panel.
Note the routing of the chassis intrusion cable as you remove the cable from the chassis. Chassis hooks may hold the cable in place inside
the chassis.
5. Slide the chassis intrusion switch out of its slot and remove the switch and its attached cable from the chassis.
6. Install the replacement chassis intrusion switch and cable.
7. To reset the chassis intrusion detector, enter System Setup during the system's power-on self-test (POST). In the Chassis Intrusion option,
press the left- or right-arrow key to select Reset, and then choose Enabled, Enabled-Silent, or Disabled (see your User's Guide for
instructions).
Drives
Figure 8. Drive Locations
Preliminary Steps
You must remove the drive shelf before removing the 3.5-inch diskette drive, the CD-ROM drive, the hard-disk drive, the control panel, the chassis
intrusion switch, or the power supply.
Figure 9. Drive Shelf Removal
1 Control panel
2 Chassis intrusion switch
NOTE: In all of the following procedures, left and right refer to your left and right as you face the front of the computer.
1 Chassis intrusion switch
2 CD-ROM drive
3 3.5-inch diskette drive
4 Hard-disk drive