HP 54-30586-02 - PCI backplane board - Features 10 PCI slots (eight 5V, two 3.3V) - For model 3B ES45 Retail
HP 54-30586-01 - PCI backplane board - Features 10 PCI slots (eight 5V, two 3.3V) - For model 3B ES45 Retail
HP P1178-69001 - I/O board Ultra3 SCSI - Contains four 64-BIT PCI, two 64-BIT and two 32-BIT `hot plug` PCI accessory card slots - I/O Board Ultra3 SCSI - Contains four 64-bit PCI, two 64-bit and two 32-bit hot plug PCI accessory card slots Retail
