ASRock ATX DDR4 Motherboards Z170 PRO4 LGA1151 Intel Z170 Memory: 4x DDR4-3200+(OC)/ 2933(OC)/ 2800(OC)/ 2400(OC)/ 2133 DIMM Slots, Dual Channel, Non-ECC, Unbuffered, Max Capacity of 64GB Slots: 2x PCI-Express 3.0x16 Slots (one runs at x4), 3x PCI-Express 3.0x1Slot (Flexible PCIe) SATA: 6x SATA3 Ports, Support RAID 0, 1, 5, 10; 2x SATA Express Ports Audio: Realtek ALC892 7.1-Channel High Definition Audio CODEC, Supports Premium Blu-ray Audio