Intel Extreme series Desktop Board DP67BGB3 (single)... ATX, LGA1155 socket, Intel P67 Express Chipset, (4) 240-pin DDR3 1600/1333/1066 MHz DIMM sockets (up to 32GB), Intel High Definition Audio (10-channel), Intel Gigabit LAN, (2) USB 3.0 ports, (14) USB 2.0 ports, (2) Serial ATA 6.0 Gb/s ports, (4) Serial ATA 3.0 Gb/s ports, (1) eSATA external port, (1) IEEE-1394a header, (1) PCIe 2.0 x16 bus (switchable to 2x8 PCIe 2.0 connectors), (3) PCIe 2.0 x1 connectors, (2) PCI conventional bus connectors; RAID 0, 1, 5 & 10. Includes Board, ATX compliant I/O shield, UV SATA cables, Board & back panel I/O layout stickers, Quick reference guide, Intel Express Installer driver & software DVD, Bluetooth/Wi-Fi module, NVIDIA SLI two-way connector, Post code information card.