ASRock Z170M OC Formula BIOS 1.40 ASRock Super Alloy OC Formula Kit : Power / Connector / Cooling 10 Layer PCB Supports 6th Generation Intel® Core Processors (Socket 1151) Digi Power, 14 Power Phase design Supports Dual Channel DDR4 4500+(OC) Hyper BCLK Engine Integrated 3 PCIe 3.0 x16 AMD Quad CrossFireX™, NVIDIA® Quad SLI™ 7.1 CH HD Audio (Realtek ALC1150 Audio Codec), Supports Purity Sound™ 3 & DTS Connect Intel® Gigabit LAN 8 SATA3, 2 SATA Express, 1 Ultra M.2 2 USB 3.1 10Gb/s (1 Type-A + 1 Type-C), 6 USB 3.0 (2 Front, 4 Rear), 6 USB 2.0 (4 Front, 2 Rear) V-Probe, Rapid OC, PCIe ON/OFF, XMP Switch, Slow Mode Switch, LN2 Mode Switch