LGA1155 socket for 2nd Generation Intel Core i7/Core i5/Core i3 Processors. Intel Z68 Express Chipset. 4 x DIMM, max. 32GB, Dual-channel DDR3 2200(O.C.)*/2133(O.C.)/1866(O.C.)/1600/1333/1066 MHz Support. 2 x PCI Express 2.0 x16 slots (bluex16, blackx4) w/ AMD Quad-GPU CrossFireX Technology Support. 2 x PCI slots. 3 x SATA 6 Gb/s (RAID 0/1/5/10 Support for Z68). 4 x SATA 3 Gb/s + 1 eSATA 6Gb/s. 2 x USB 3.0 (at back panel) + 14 x USB 2.0 (4 ports at back panel, 10 ports at mid-board). DisplayPort, HDMI, DVI-D, D-Sub ports. 1 x Optical S/PDIF Out header. 1 x TPM header. 1 x LPT connector. 1 x COM port connector. 1 x Gb LAN. 6 x audio ports + 8-CH High Definition Audio, DTS