ASRock Micro ATX DDR4 Motherboards Z170M PRO4S 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), 2x PCI-Express 3.0x1Slot (Flexible PCIe) Multi-Graphics: Support AMD Quad CrossFireX,CrossFireXTechnology SATA: 6x SATA3 Ports, Support RAID 0, 1, 5, 10