MSI LGA2011/Intel X79/DDR3/CrossfireX and 3-Way SLI/SATA3 and USB 3.0/A and GbE/ATX Motherboard X79A-GD45(8D) CPU: Socket 2011; Supports 2nd Generation Intel Core i7 processors Chipset: Intel X79 Memory: 8x DDR3-2400(OC)/2133/1866/1600/1333/1066 DIMM Slots, Unbuffered, Quad Channel, Max Capacity Up to 128GB Slots: 3x PCI-Express 3.0 x16 Slots (one runs at x8); 2x PCI-Express 2.0 x16 Slots; 1x PCI-Express 2.0 x1 Slot SATA: 4x SATA2 Ports, Support RAID 0/1/5/10; 2x SATA3 Ports, Support RAID 0/1 Ports: 10x USB 2.0 Ports (6 rear, 4via headers); 4x USB 3.0 Ports (2 rear, 2via headers);1x PS/2 Keyboard Port; 1x PS/2 Mouse Port; 1x Optical SPDIF-out; 1x Coaxial SPDIF-out; 1x RJ45 LAN Port; Audio I/O jacks Power Connector: 1x 24pin ATX Power Connector, 1x 8pin ATX 12VPower Connector; 1x 4pin Power Connector