Removing and replacing the DIMM guard PrerequisitesT-15 Torx screwdriver 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 air baffle. Remove the DIMM guard. Manage cables in the channel between DIMM guard and chassis. To replace the component, reverse the removal procedure.