ASRock X79 Extreme 9 [Supports Up To 5 PCIe x16 Cards]
8 x DDR3 Slots (1066MHz-2400MHz) Up To 64GB
8 x SATA3 Ports, 4 x SATA2 Ports
5 x PCIe 3.0 x16 Slots
8 x USB 3.0 Ports, 12 x USB 2.0 Ports
Supports Quad AMD CrossFireX & nVidia SLI
Includes USB 3.0 Header For 3.5" Bay