EVGA X79 SLI (LGA2011) SandyBridge-E Intel X79 ATX DDR3 2133 3-Way SLI Ready Motherboard (132-SE-E775-KR) Supports Sandy Bridge E (Enthusiest) Processors Intel X79 Chipset Enthusiest Layout Supporting 2-Way SLI, 3-Way SLI, & CrossfireX 4 DIMM Quad-Channel DDR3 2133MHz+ (up to 32GB) PCI express 3.0 Ready 3 PCI express Graphics Expansion Slots (plus 2 x PCI-E x1 slots) 10xUSB 2.0, 4xUSB 3.0 ports, 2xSATA III/6G ports, 4 SATA II/3G Ports (2 E-SATA), 1394b Firewire, Gigabit Ethernet (10/100/1000) 8 Channel High Definition Audio + Optical