ASROCK LGA1155/Intel Z77/DDR3/Quad CrossFireX and Quad SLI ATX Motherboard Z77 WS CPU: LGA1155 Chipset: Intel Z77 Memory: 4x DDR3-3000+(OC)/2400(OC)/2133(OC)/1866(OC)/1600/1333/1066 DIMM Slots, Dual Channel, Non-ECC, Unbuffered, Max Capacity of 32GB Slots: 5x PCI-Express 3.0 x16 Slots (run at x16 or x16/0/x16/0 or x8/x8/x8/x8), 1x PCI-Express 2.0 x16 Slot (runs at x4),1x PCI Express 2.0 x1 Slot SATA: 6x SATA3 Ports, Two Support RAID 0, 1, 5, 10; 4x SATA2 Ports, Support RAID 0, 1, 5, 10 Ports: 12x USB 3.0 Ports (8 rear, 4 via headers), 8x USB 2.0 Ports (2 rear, 6 via headers),1x PS/2 Keyboard/Mouse Port, 1x eSATA3 Port, 1x HDMI Port, 2x IEEE 1394 Ports (1 rear, 1 via header), 1x Optical SPDIF Out Port, 2x RJ45 LAN Ports, Audio I/O Jacks LAN: Broadcom BCM57781 PCI-Express Gigabit Ethernet Controller