ASRock 990FX PROFESSIONAL AMD 990FX & SB950 ATX DDR3 800 AMD - AM3+ Motherboard Socket AM3+ Chipset: AMD 990FX & SB950 Memory: 4x DDR3-2100(OC)/1866(OC)/1600(OC)/1333/1066/800 DIMMs Slots: 3x PCI-Express 2.0 x16 Slots; 2x PCI-Express 2.0 x1 slots; 2x PCI Slots SATA: 6x SATA3 Ports, Support RAID 0/ 1/ 0+1/ JBOD/ 5, 2x eSATA3 Ports Ports: 9x USB 2.0 Ports (5 rear, 4 by headers); 6x USB 3.0 Ports (2 rear, 4 by headers); 2x IEEE 1394 Ports Power Connector: 1x 24pin main power, 1x 8pin CPU power Form Factor: ATX