Gigabyte LGA 1151 Z170 2-Way SLI UEFI DualBIOS ATX DDR4  ATX DDR4 NA Motherboards GA-Z170XP-SLI LGA1151, Supports 6th Generation Intel Core Processors Refer the user manual below for troubleshooting Memory: 4x DDR4, Dual Channel, Non-ECC, Max Capacity of 64GB Slots: 1x PCI-Express 3.0 x16 Slots, 1x PCI-Express 3.0 x8, 1x PCI-Express 3.0 x4, 2x PCI-Express 3.0 x1, 2x PCI Slots SATA: 6x SATA3 Ports USB: 1 USB 3.1 (A+C) ports; 7 USB 3.0 ports; 6 USB 2.0 ports