Hardware options installation 70
5. Remove the expansion 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 an expansion board
When installing a high-wattage video/graphics controller, observe the following guidelines:
• Install the controller in the x16 slot ("System board components" on page 11).
• Install the 150W PCIe video/graphics controller power cable ("150W PCIe video/graphics controller
power cable option" on page 82).
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.
To install the component:
1. Power down the server (on page 24).
2. Do one of the following:
o Open or remove the tower bezel, as needed ("Open or remove the tower bezel" on page 25).
o Extend the server from the rack (on page 24).
3. Remove the access panel (on page 26).
4. Remove the expansion slot cover from the slot, if installed ("Removing the expansion slot cover" on page
69).
IMPORTANT: It may be necessary to remove the slot cover next to the slot in which you are
installing a board.
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