CPU Socket AM3AM3 Memory 4x DDR3-2450OC 2100OC 1600 1333 1066 DIMM Slots Dual Channel Non-ECC Unbuffered Max Capacity of 64GB Slots 4x PCI-Express 20 x16 Slots one runs at x16 one runs at x4 others - single run at x16x8 or dual run at x8x8 1x PCI-Express 20 x1 Slot 1x PCI Slot SATA 8x SATA3 Ports Six Support RAID 0 1 01 5 JBOD Ports 8x USB 30 Ports 4 rear 4 via headers 8x USB 20 Ports 4 rear 4 via headers 1x PS2 Mouse Port 1x PS2 Keyboard Port 2x eSATA3 Ports 1x Coaxial SPDIF Out 1x Optical SPDIF Out 1x IEEE 1394 Port 1x RJ45 LAN Port Audio IO Jacks Form Factor ATX