Dell OptiPlex 960 Service Manual page 20

a. Align the bottom of the cover with the hinge tabs located along the bottom edge of the computer.
b. Using the hinge tabs as leverage, rotate the cover downward to close it.
c. Snap the cover into place by pulling back on the cover release latch and then releasing the latch when the cover is properly seated.
d. Ensure that the cover is seated correctly before moving the computer.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
4. Attach the computer stand (if applicable). For instructions, see the documentation that came with the stand.
5. Connect your computer and devices to electrical outlets, and turn them on.
After you remove and replace the cover, the chassis intrusion detector (optional on some computers), if installed and enabled, causes the following
message to appear on the screen at the next computer start-up:
ALERT! Cover was previously removed.
6. Reset the chassis intrusion detector by changing Chassis Intrusion to On or On-Silent. See the following:
Mini Tower — Resetting the Chassis Intrusion Detector
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Desktop — Resetting the Chassis Intrusion Detector
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Small Form Factor —
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NOTE: If an administrator password has been assigned by someone else, contact your network administrator for information on resetting the chassis
intrusion detector.
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Resetting the Chassis Intrusion Detector