Dell OptiPlex GX520 Quick Reference Manual page 20

4 Slide the cover release latch back as you lift the cover.
5 Grip the sides of the computer cover and pivot the cover up using the hinge tabs as leverage
points.
6 Remove the cover from the hinge tabs and set it aside on a clean, nonabrasive 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