ASRock FATAL1TY X99M KILLER/3.1 LGA2011-v3/ Intel X99/ DDR4/ Quad CrossFireX & Quad SLI/ SATA3&USB3.1/ M.2&SATA Express/ A&2GbE/ MicroATX Motherboard LGA 2011-v3 Chipset: Intel X99 Memory: 4x DDR4-3200+(OC)/ 2933(OC)/ 2800(OC)/ 2400(OC)/ 2133 DIMM Slots,Quad-Channel, Non-ECC, Unbuffered,Max Capacity up to 64GB Slots: 2x PCI-Express 3.0 x16 Slots, 1x PCI-Express 2.0 x16 Slots (runs at x4) Ports: 2 x USB 3.1 Ports (Type-A), 4x USB 3.0 Ports (2 rear, 2 via header), 8x USB 2.0 Ports (3 rear, 4 via headers, 1 Fatal1ty Mouse Port), 1x PS/2 Keyboard/Mouse Combo Port,1x Optical S/PDIF Out, 1x eSATA Port, 2x RJ45 LAN Ports, Audio I/O Jacks Form Factor: MicroATX