HP P2553-69003 - SCSI backplane (hot-swap) - Has five SCA SCSI connectors for five hot-swap SCSI drives Retail
HP A6153-67004 - Hot-swap SCSI backplane - Has two SCA connectors for hot-swap hard drives and a connector for the front panel cable - Hot-swap SCSI backplane - Mounts on the back of the hot-swap bay - Has two SCA connectors for hot-swap hard drives Retail
HP A6961-67205 - SCSI backplane board - Has two 80-pin SCA hot-swap drive sockets - Includes the management board and simplex board Retail
HP P1810-63035 - SCSI backplane - Has SCA connectors for hot swap drives on one side and 68-pin SCSI connectors on the other side Retail
HP P3505-63001 - SCSI backplane (non hot-swap) - Has five 68-pin SCSI connectors with four power connectors and five SCA SCSI connectors on the other side Retail
