Specifications. CPU: Dual Socket P LGA3647. Chipset: Intel C621. Memory: 8x DDR4-266-6/2400/2133 MHz ECC DIMM Slots, Support up to 512GB ECC/REG Memory or up to 1TB ECC/Load Reduced Memory. Slots: 2x PCI-Express 3.0 x16 Slots, 4x PCI-Express 3.0 x8 Slots ( one runs at x4). SATA: 10x SATA3 Ports, Support RAID 0, 1, 5, 10. Video: Aspeed AST2500 BMC Graphics. LAN: Dual LAN with Lewisburg Marvell 88E1512 PHY. Ports: 3x USB 3.0 Ports ( 2 via header, 1 Type A), 4x USB 2.0 Ports ( 2 rear, 2 via header), 1x VGA Port, 2x RJ45 Gigabit Ethernet LAN Ports. Form Factor: ATX, 12.076 x 10.150 in./30.67 x 25.78 cm