Supermicro DDR3 800 LGA 1366 Server Motherboard X8SAX-O CPU: Socket 1366 Support Intel Core i7-965/ i7-940/ i7-920/ Nehalem Processor; QPI upto 6.4 GT/s Chipset: Intel X58 & ICH10R + PXH/V Memory: 6x 240pin DDR3-1333/1066/800 DIMMs, Three Channel, ECC/Non-ECC Unbuffered, Upto 24GB Slots: 2x PCI-Express 2.0 x16 Slot; 1x PCI-Express x8 Slot (Run on x4); 2x 64-bit 133/100MHz PCI-X (3.3V) Slots; 1x 32-bit PCI Slot SATA: 6x SATA2 Ports, Support RAID 0, 1, 5, 10 Ports: 12x USB 2.0 Ports (8 by rear, 2 by headers, 2 on-board); 2x PS/2 Ports; 2x RJ45 LAN Ports; 1x S/PDIF digital output; Audio I/O Jacks LAN: Dual Intel 82574L Gigabit Ethernet Controller