ASRock ATX DDR4 Motherboards X99 EXTREME4/3.1 LGA 2011-v3 Chipset: Intel X99 Memory: 8x DDR4-3200+(OC)/2933(OC)/2800(OC)/2400(OC)/2133,Quad-Channel, Non-ECC, Unbuffered, Max Capacity up to 128GB Slots: 3x PCI-Express 3.0 x16 Slots (one runs at x8), 1x PCI-Express 2.0 x16 Slot (runs at x4), 1x PCI-Express 2.0 x1 Slot Multi-Graphics: Supports AMD Quad CrossFireX, 3-Way CrossFireX, CrossFireX and NVIDIA Quad SLI, 3-Way SLI, SLI Technology LAN: Intel I218V Gigabit Ethernet Controller Power Connector: 1x 24pin ATX Power Connector, 1x 8pin 12V Power Connector