HP ProLiant ML30 Gen10 Plus Maintenance And Service Manual page 105

2. Remove all power:
a. Disconnect each power cord from the power source.
b. Disconnect each power cord from the server.
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 .
6. Remove the serial port:
a. Remove the hex screws (callout 1).
b. Detach the serial port from the rear panel (callout 2).
HPE ProLiant ML30 Gen10 Plus Server Maintenance and Service Guide 105