Asus Rampage III Extreme Socket 1366/ Intel X58/ 3-Way SLI & CrossFireX/ SATA3&USB3.0/ WiFi/ A&GbE Motherboard LAN: Gigabit LAN Controller Slots: 4x PCI-Express 2.0 x16 Slots (Support nVidia 3-Way SLI / ATI CrossFireX Technology); 1x PCI-Express x4 Slot; 1x PCI 2.2 Slot Chipset: Intel X58 & ICH10R CPU: Socket LGA1366 Support Intel Core i7 Extreme Edition/Core i7 Processor; QPI Upto 6400 MT/s Memory: 6x 240pin DDR3-2200(O.C.)/2133(O.C.)/2000(O.C.)/1800(O.C.)/1600/1333/1066 DIMMs, Triple Channel, Non-ECC/Un-buffered, Max Capacity 24GB CPU: Socket LGA1366 Support Intel Core i7 Extreme Edition/Core i7 Processor; QPI Upto 6400 MT/s Chipset: Intel X58 & ICH10R Memory: 6x 240pin DDR3-2200(O.C.)/2133(O.C.)/2000(O.C.)/1800(O.C.)/1600/1333/1066 DIMMs, Triple Channel, Non-ECC/Un-buffered, Max Capacity 24GB Slots: 4x PCI-Express 2.0 x16 Slots (Support nVidia 3-Way SLI / ATI CrossFireX Technology); 1x PCI-Express x4 Slot; 1x PCI 2.2 Slot LAN: Gigabit LAN Controller Ports: 9x USB 2.0 Ports (6 rear, 2 at midboard, 1 reserved for ROG Connect); 2x USB 3.0 Ports; 2x IEEE 1394a Ports (1 rear, 1 by header); 1x eSATA Port; 1x PS/2 Port; 1x RJ45 LAN Port; Audio I/O Jacks