HP A6961-04028 - Power supply hot-swap fan assembly - Includes two fans mounted in a metal frame Retail
HP D4898-69024 - Power monitor controller board - Monitors the power output from the hot-swap power supplies Retail
HP A6961-67205 - SCSI backplane board - Has two 80-pin SCA hot-swap drive sockets - Includes the management board and simplex board Retail