ASRock ATX DDR4 Motherboards H170 PRO4S LGA1151 Intel H170 Memory: 4x DDR4-2133 DIMM Slots, Dual Channel, Non-ECC, Unbuffered, Max Capacity of 64GB Slots: 2x PCI-Express 3.0 x16 Slots (one runs at x4), 3x PCI-Express 3.0 x1 Slots (Flexible PCI-Express) Multi-Graphics: Supports AMD Quad CrossFireX, CrossFireX Technology SATA: 6x SATA3 Ports, Support RAID 0, 1, 5, 10; 1x SATA Express Port