HP Rear Heatsink Fan Assembly and CPU Tray Retainer for Z8 G4 Workstation 907572-001 [907572-001] - $145.00 : Professional Multi Monitor Workstations, Graphics Card Experts
HP Z8 G4 Workstation
Remove and Replace the System Board | HP Z8 G4 Workstation | HP - YouTube
HP Motherboard for Z8 G4 Workstation | Laptech The IT Store.