Product Detail Intel P55 chipset Supports 4 DIMM Dual Channel memory up to 2200MHz 13 USB ports with 6 onboard 8 channel HD audio Firewire IE1394 and 1 x16 or 2 x 8 and 1 x 4 PCI Express lanes . The "EVGA P55 SLI Mainboard 132-LF-E655-KR" is best product for you. We recommended EVGA P55 SLI Mainboard 132-LF-E655-KR