User guide

Hardware options installation 65
4. Open the slot cover retainer.
5. Remove the slot cover.
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.
Installing expansion boards
CAUTION: To prevent damage to the server or expansion boards, power down the server and
remove all AC power cords before removing or installing the expansion boards.
1. Power down the server (on page 20).
2. Do one of the following:
o Open or remove the tower bezel, as needed ("Open or remove the tower bezel" on page 20).
o Extend the server from the rack (on page 21).