ASRock ATX DDR3 1333 LGA 1150 Motherboards Z97 EXTREME3 Supports the 5th/ New 4th/ 4th Generation Intel Core i7/i5/i3/ Pentium/ Celeron Processors Memory: 4x DDR3-3100+(OC)/ 2933(OC)/ 2800(OC)/ 2400(OC)/ 2133(OC)/ 1866(OC)/ 1600/ 1333/ 1066 DIMM Slots, Dual Channel, Non-ECC, Unbuffered, Max Capacity of 32GB Slots: 2x PCI-Express 3.0 x16 Slots (run at x16 or x8/x8), 1x PCI-Express 2.0 x1 Slot, 3x PCI Slots SATA: 6x SATA3 Ports, Support RAID 0, 1, 5, 10 Multi-Graphics: Supports AMD Quad CrossFireX, CrossFireX and NVIDIA Quad SLI, SLI Technology Ports: 6x USB 3.0 Ports (4 rear, 2 via header), 6x USB 2.0 Ports (2 rear, 4 via headers), 1x PS/2 Mouse/Keyboard Combo Port, 1x VGA Port, 1x DVI-D Port, 1x HDMI Port, 1x Optical S/PDIF Out, 1x RJ45 LAN Port, Audio I/O Jacks