HP Pro 6000 SFF LGA775 Motherboard (531965-001 503362-001). This is a seller refurbished part in great working condition.
Support Memory DDR3 800/ 667 MHz
Socket Type LGA 775
Expansion Slots PCI, PCI Express x1, PCI Express x16
Input/Output Ports COM, Ethernet (RJ-45), SATA II
Product Name HP 6000 PRO