FOR HP Z800 Motherboard LGA 1366 591182-001 460838-003 LGA1366 | eBay
691182-001 HP Z800 Dual Quad Core LGA1366 Motherboard 460838 (Refurbished)
Hacking the HP Z800 Xeon motherboard into a standard case | Andys Workshop
New HP Z800 Workstation Dual LGA1366 System Board Motherboard [576202-001, 460838-002] - $245.00 : Professional Multi Monitor Workstations, Graphics Card Experts
460838-003 HP MOTHERBOARD FOR HP Z800 WORKSTATION - SYSTEM BOARD 5600 SERIES