HP ProDesk 600 G1 Tower HP ProDesk 600 G1 Small Form Factor Maintenance and Service Guide

Removing the Smart Cover Lock Screw from the Small Form Factor
Removing the Smart Cover Lock Screw from the Ultra-slim Desktop
6. You can now remove the access panel.
To reattach the Smart Cover Lock, secure the lock in place with the tamper-proof screws.
Using the smart cover FailSafe key to remove the smart cover lock
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