Notice the icons under the screw:

locked

unlocked

screw

5.The cover is also secured by two latches on the back of the cover near the comers. Press both latches inward and then lift up the cover from the back panel. You might meet some resistance from the grounding tabs along the inside of the cover.

latches

6.Pull the cover away from the front of the computer to completely remove it. Then set it aside.

Accessing Internal Components

5-3