Dell OptiPlex GX620 Quick Reference Manual page 22

5 Grip the sides of the computer cover and pivot the cover up using the bottom hinge tabs as
leverage points.
6 Remove the cover from the hinge tabs and set it aside on a soft non-abrasive surface.
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Quick Reference Guide
1
2
3
4
1 security cable slot
2 cover release latch
3 padlock ring
4 computer cover
1
2
3