ASRock ATX Motherboard ATX DDR3 1066 LGA 1150 Motherboards Z97 OC FORMULA Socket 1150 Chipset: Intel Z97 Memory: 4x DDR3-3400+(OC)/ 2933(OC)/ 2800(OC)/ 2400(OC)/ 2133(OC)/ 1866(OC)/ 1600/ 1333/ 1066 DIMM Slots, Dual Channel, Non-ECC, Unbuffered, Max Capacity of 32GB Slots: 3x PCI-Express 3.0 x16 Slots (run at x16 or x8/x8, or x8/x4/x4), 1x PCI-Express 2.0 x16 Slot (runs at x4), 2x PCI-Express 2.0 x1 Slots Multi-Graphics: Supports AMD Quad CrossFireX, 4-Way CrossFireX, 3-Way CrossFireX, CrossFireX and NVIDIA Quad SLI, SLI Technology Ports: 8x USB 3.0 Ports (6 rear, 2 via header), 6x USB 2.0 Ports (4 rear, 2 via header), 1x PS/2 Mouse/Keyboard Port, 1x HDMI Port, 1x Optical S/PDIF Out, 1x RJ45 LAN Port, Audio I/O Jacks Power Connector: 1x 24pin ATX Power Connector, 2x 8pin 12V Power Connectors, 1x PCI-Express Power Connector Chipset: Intel Z97