Asrock X99 Extreme6, Intel 2011-3 Socket X99 Chipset ATX Motherboard, Supports Intel Core i7 and Xeon 18-Core Processors Family for the LGA 2011-3 Socket, Digi Power, 12 Power Phase design, Supports Quad Channel DDR4 3000 (OC) memory with max. capacity up to 128GB, 3 PCIe 3.0 x16, 2 PCIe 2.0 x1, 1 mini-PCIe, Supports AMD 3-Way CrossFireX and NVIDIA 3-Way SLI , 7.1 CH HD Audio, Intel Gigabit LAN Qualcomm Atheros Gigabit LAN, 10 SATA3, 1 eSATA, 1 Ultra M.2, 10 USB 3.0, 7 USB 2.0, 1 COM Port Header, 1 Thunderbolt AIC Connector