HP HPE ProLiant DL120 Gen9 Maintenance And Service Manual page 63

CAUTION: To prevent improper cooling and thermal damage, do not operate the server
unless all PCI slots have either an expansion slot cover or an expansion board installed.
To remove the component:
Power down the server (on page 30).
1.
Remove all power:
2.
Disconnect each power cord from the power source.
a.
Disconnect each power cord from the server.
b.
Do one of the following:
3.
Extend the server from the rack (on page 30).
o
Remove the server from the rack (on page 33).
o
Remove the access panel
4.
Disconnect all cables connected to existing expansion boards.
5.
Remove all expansion boards
6.
Hold the ends of the riser cage and lift up.
7.
Remove the screws, then remove the riser board from the cage.
8.
To replace the component, reverse the removal procedure.
("Access panel" on page 40).
("Expansion board" on page 61).
Removal and replacement procedures 63