ASRock ATX DDR3 1066 Motherboard 990FX EXTREME6 Socket AM3+/AM3 Chipset: North Bridge AMD 990FX & South Bridge AMD SB950 Memory: 4x DDR3-2450(OC)/ 2100(OC)/ 1600/ 1333/ 1066 DIMM Slots, Dual Channel, Non-ECC, Unbuffered, Max Capacity of 64GB Slots: 3x PCI-Express 2.0 x16 Slots (two run at x16, one runs at x4), 2x PCI-Express 2.0 x1 Slots SATA: 5x SATA3 Ports, Support RAID 0, 1, 0+1, 5 Ports: 7x USB 3.0 Ports (4 rear, 2 via header, 1 Vertical Type A), 10x USB 2.0 Ports (6 rear, 4 via headers), 1x PS/2 Mouse Port, 1x PS/2 Keyboard Port, 1x eSATA3 Port, 1x Optical S/PDIF Out, 1x RJ45 LAN Port, Audio I/O Jacks