Chipset – Intel X99 Express SLI – Up to 3-Way SLI SATA – 6 Native SATA 6.0Gb/s Ports USB – 6 Native USB 3.0 / 8 USB 2.0 Memory – 4 DIMM Quad-Channel DDR4 2667MHz+ (OC) (Up to 64GB) Capacitors – 100% Solid State Form Factor – mATX Ethernet – Intel Gigabit NIC Audio – 8 Channel High Definition Audio + Optical M.2 Socket Slot E PCB – 8 Layers Highly Efficient 6-phase Digital VRM Onboard Power, Reset and Clear CMOS EVGA E-LEET X Tuning Utility Onboard CPU Temp Monitor Memory – 4 DIMM Quad-Channel DDR4 3000MHz+ (OC) (Up to 64GB) Capacitors – 100% Solid State Form Factor – mATX