ROG MAXIMUS IX EXTREME Desktop Motherboard - Intel Chipset - Socket H4 LGA-1151 - Extended ATX - 1 x Processor Support - 64 GB DDR4 SDRAM Maximum RAM - 4 GHz O.C., 4.13 GHz O.C., 3.60 GHz O.C., 3.87 GHz O.C., 3.80 GHz O.C., 3.47 GHz O.C., 3.40 GHz O.C., 2.67 GHz O.C., 3.73 GHz O.C., 2.40 GHz O.C., 3.50 GHz O.C. Memory Speed Supported - DIMM - 4 x Memory Slots - Serial ATA/600 RAID Supported Controller - 10, 5, 1, 0 RAID Levels - CPU Dependent Video - 6 x USB 3.0 Port - Bluetooth - Wireless :