P2553-69003 - HP SCSI Backplane Board for TC3100 Server P2553-69003 - HP SCSI Backplane Board for TC3100 Server $203.51
A6961-60002 - HP SCSI Backplane Board for Integrity rx4640 Server A6961-60002 - HP SCSI Backplane Board for Integrity rx4640 Server $98.05
A6961-60102 - HP SCSI Backplane Board for Integrity rx4640 Server A6961-60102 - HP SCSI Backplane Board for Integrity rx4640 Server $141.14