HP D8228-63013 - Hot-swap fan assembly - For the I/O boards - Mounts on the I/O board support in the middle of the chassis (Two used) Retail
HP A4856-69101 - PCI card cage assembly - Includes 12-slot I/O chassis, I/O board, I/O power board, and I/O backplane Retail
HP D9143-69004 - I/O baseboard - Has internal and external SCSI connectors and a slot for the I/O board Retail
HP A4856AX - PCI card cage assembly 3.3/5.0V - Includes 12-slot I/O chassis, I/O board, I/O power board, and I/O backplane Retail
HP P1756-69002 - I/O baseboard - Has internal and external Ultra3 SCSI connectors and a slot for the I/O board Retail
