EVGA X79 Dark Desktop Motherboard, Intel X79 Express Chipset, Socket R LGA-2011, Retail Pack with EATX DDR3 2600 LGA 2011 Motherboards (150-SE-E789-K2) Package Type: RetailProduct Type: Desktop MotherboardChipset Manufacturer: IntelChipset Model: X79 ExpressTotal Processor Supported: 1Processor Socket: Socket R LGA-2011Processor Supported: Core i764-bit Processing: Yes Controller Type: Serial ATA/600, Serial ATA/300RAID Supported: YesAudio Channels: 7.1Gigabit Ethernet: YesNumber of Total Expansion Slots: 6Total Number of PCI Express Slots: 6Number of PCI Express x16 Slots: 5 Number of Network (RJ-45) Ports: 2Number of SATA Interfaces: 10Total Number of Onboard USB Ports: 6Number of Onboard USB 2.0 Ports: 4Form Factor: Extended ATX Number of Memory Slots: 8Memory Form Factor: DIMMMaximum Memory: 64 GBMemory Technology: DDR3 SDRAM eSATA: YesNumber of eSATA Ports: 2Total Number of USB Ports: 10Number of USB 3.0 Ports: 4Network (RJ-45): YesMulti GPU Supported: CrossFireX, SLI