3. Disconnect all peripheral cables from the server.
4. Do one of the following:
If the server is in tower mode, place the server on a flat, level surface with the access panel facing up.
If the server is in rack mode, remove the server from the rack .
5. Remove the access panel:
a. Loosen the access panel thumbscrew (callout 1).
b. Slide the access panel toward the rear panel, and then lift it away from the chassis (callout 2).