Removing a riser cage 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 PCI riser cage. Procedure Power down the server. Remove all power: Disconnect each power cord from the power source. Disconnect each power cord from the server. Do one of the following: Extend the server from the rack. Remove the server from the rack. Remove the access panel. Remove the riser cage: Primary and secondary riser cages Tertiary riser cage