Features: 1.8 USB3.0 Interface: B75 miner motherboard supports 8 USB3.0 to PCIE, can connect 8 graphics cards, and the mining computing power is higher 2.3 Phase Power Supply: Miner motherboards use 3 phase power supply, free dual core CPU, support 2 x DDR3. 3.PCB Material: BTC miner motherboard is made of PCB material with high performance and stable performance. 4.Solid Capacitor: All solid capacitor design, the quality of the power supply cooling block is more stable and durable than ordinary capacitors. 5.Easy to Install: USB PC mainboard supports SATA port, small size and easy to install. It is easy to use and has high compatibility. specification:Item Type: DDR3 Miner Motherboard Material:PCB Motherboard Chip: Main Chipset:for Intel B75 Series Integrated Graphics:CPU Core Graphics Integrated Internet Card Processor s: CPU Platform for Intel Core 2nd and 3rd Generation CPU Socket LGA 1155 The Number of Supported CPUs is 1 (Dual Core CPU is Given Randomly, the Model is Not Fixed) Memory s: Memory Type: DDR3 1600/1333/1066 MHZ Memory Slot: 2 x DDR3 Expansion Slots: 2 x 6pin 12V Power Supply Interface 8 x USB3.0 Interface (PCIE X1 Channel Can Be Connected to Graphics Card) USB2.0 Pin (One Set) USB3.0 Pins (One Set) 1 x JATX HDD Power Supply Interface 1 x MSATA Interface 4 x SATA Interface I/O Interface: 1 x RJ45 Internet Interface 1 x VGA Port 1 x High Definition Multimedia Interface Output 2 x USB 2.0 Ports 2 x USB3.0 Interface Motherboard Size:Approx. 23 x 17.5cm / 9.1 x 6.9in Battery Type: A Button Battery CR2032l (Not Included) Other Parameters: One 8pin Power Socket, One 24pin Power Interface, Two 6p Power Supply Power Supply Mode 3 Phase PackageList:1 x DDR3MinerMotherboard 1 xUser Manual NoteShips without battery.