HPE ProLiant ML30 Gen10 Plus Maintenance And Service Manual page 40

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).
HPE ProLiant ML30 Gen10 Plus Server Maintenance and Service Guide 40