Biostar AM3+ 990FX SATA 6Gbps USB 3.0 ATX AMD Motherboard TA990FXE CPU: AM3+/AM3 FX x8 x6 x4, Phenom II X6 x4 x3 x2, Athlon II x4 x3 x2, Sempron Memory: 4 x DDR3 DIMM Slots supporting up to 32GB MAX at 2000/1866/1600/1333/1066 3-Way Crossfire (x16, x16, x4) or Crossfire (x16, x16) Back Panel: Keyboard, Mouse, 2 x USB 3.0, 4 x USB 2.0, eSATA, Gigabit Ethernet, S/Pdif, 6 Audio, Firewire Internal Connections: 2 x USB 3.0, 4 x USB 2.0, 5 x SATA3, Front HD Audio, Serial and Firewire ATX Form Factor 12" x 9.6" (305mm x 244mm) RAID: Supports SATA RAID 0, 1, 5, 10 Expansion Slots: 3 x PCI-e x16, PCI-e x1, 2 x PCI