HP ProLiant DL180 Gen9 User Manual page 21

In a server that uses thumbscrew rack ears, loosen the captive thumbscrews that secure the server
2.
faceplate to the front of the rack, and then slide the server out of the rack.
In a server that uses quick-release latch rack ears:
3.
Open the latches on both sides of the server.
a.
If necessary, use a T-25 Torx screwdriver to loosen the shipping screws.
b.
Slide the server out of the rack.
c.
Operations 21