4.Turn the computer around so you are facing the back panel. The cover is secured by a large screw on the back panel, as shown below. Turn the screw counterclockwise to unlock the cover.
5.The cover is also secured by two latches on the back of the cover near the corners. 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
Installing and Removing Options |