Closing the case
Replace the chassis cover as soon as you finish installing or removing components so that dust and dirt (which can damage the computer) do not collect inside the computer.
To replace the bezel:
1Holding the bezel at an angle to the front of the chassis, place the hinge tabs on the right side of the bezel in the appropriate slots in the front of the chassis.
2Swing the left side of the bezel toward the chassis until the retaining tabs snap into place.
Four hinge tabs are located on the right side of the bezel and are not visible in this illustration
20Case Access