Asrock LGA2011-3 X99 Extreme4 – ASRock Super Alloy, 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, Supports ECC*, RDIMM Memory (*ECC is supported with Intel Xeon processors), 3 PCIe 3.0 x16, 1 PCIe 2.0 x16, 1 PCIe 2.0 x1, Supports AMD 3-Way CrossFireX and NVIDIA 3-Way SLI , 7.1 CH HD Audio with Content Protection (Realtek ALC1150 Audio Codec), Supports Purity Sound 2 DTS Connect, Intel Gigabit LAN, 10 SATA3, 1 eSATA, 1 Ultra M.2 (PCIe Gen3 x4 SATA3), 6 USB 3.0 (2 Front, 4 Rear), 8 USB 2.0 (4 Front, 4 Back), 1 COM Port Header, 1 Thunderbolt AIC Connector, Supports ASRock HDD Saver Technology, Full Spike Protection, APP Shop