ASRock EXTREME9 ATX DDR3 1333 LGA 1150 Motherboards Z97 EXTREME9 Supports 5th Generation Intel Core i7/i5/i3/Pentium/Celeron Processors (Socket 1150) Supports Dual Channel DDR3 3200+(OC), 15 Gold Contact in DIMM Slots 4 PCIe 3.0 x16, 1 PCIe 2.0 x16, 1 mini-PCIe, 15 Gold Contact in VGA PCIe Slots (PCIE1 & PCIE4) AMD 4-Way CrossFireX and NVIDIA4-Way SLI supported by PLX PEX 8747 Bridge 2 SATA Express, 10 SATA3, 1 eSATA, 1 Ultra M.2 (Gen3 x4), 1 M.2 (Gen2 x2/SATA, Supports 30mm, 42mm, 60mm, 80mm, 110mm M.2 devices) 8 USB 3.0 (4 Front, 4 Rear), 8 USB 2.0 (4 Front, 4 Rear), 1 COM Port Header, 1 Thunderbolt AIC Connector