Removing And Replacing The Front Bezel; Removing The Computer Cover - Lenovo THINKCENTRE 9120 Replacement Manual

5. If there are thumbscrews securing the cover, remove them.
6. Press the cover-release button on the side of the computer cover, slide the cover
Figure 5. Removing the computer cover

Removing and replacing the front bezel

This section provides instructions on how to remove and replace the front bezel.
1. Remove the computer cover. See "Removing the cover" on page 11.
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Hardware Installation and Replacement Guide
to the rear, and then remove the cover.