HP HPE ProLiant DL120 Gen9 Maintenance And Service Manual page 74

Remove the processor from the processor retaining bracket.
14.
CAUTION: When returning a damaged system board to Hewlett Packard Enterprise, always
install all processor socket covers to prevent damage to the processor sockets and system
board.
Remove the system board:
15.
Remove the system board screws.
a.
Lift the system board out of the chassis.
b.
Removal and replacement procedures 74