453193-001 - HP - System I/O Board Backplane 453193-001 - HP - System I/O Board Backplane $542.51 $459.75
196721-001 - HP - Motherboard (system I/o Board) 196721-001 - HP - Motherboard (system I/o Board) $680.03 $552.87
510974-001 - HP - Front I/O Panel with USB and Audio Ports for 6000 / 8000 510974-001 - HP - Front I/O Panel with USB and Audio Ports for 6000 / 8000 $34.48 $28.03