ASRock X99 WS-E/10G LGA2011-v3/ Intel X99/ DDR4/ Quad CrossFireX & Quad SLI/ SATA3&USB3.0/ M.2/ A&4GbE/ EATX Motherboard LGA 2011-v3 Chipset: Intel X99 Memory: 8x DDR4-3200+(OC)/ 2933+(OC)/ 2800(OC)/ 2400(OC)/ 2133/ 1866/ 1600/ 1333/ 1066, Quad-Channel, Non-ECC, Unbuffered, Max Capacity up to 128GB Slots: 7x PCI-Express 3.0 x16 Slots (Single at x16; Dual at x16/x16; Triple at x16/x16/x16 ; Quad at x16/ x16/x16/x16) Multi-Graphics: Supports AMD Quad CrossFireX, 4-Way CrossFireX, 3-Way CrossFireX, CrossFireX and NVIDIA Quad SLI, 4-Way SLI, 3-Way SLI, SLI Technology Ports: 8x USB 3.0 Ports (4 rear, 4 via headers); 8x USB 2.0 Ports (4 rear, 4 via headers); 1x Optical S/PDIF Out, 1x eSATA Port, 4x RJ45 LAN Ports,Audio I/O Jacks Power Connector: 1x 24pin ATX Power Connector, 1x 8pin 12V Power Connector, 2x PCI-Express Power Connectors