ETH80-B75 computer room motherboard uses a combination of B75 chip,support LGA1155-pin CPU; B75 chip that can be stable without transmission, all solid capacitors; Design 8 graphics card interfaces, 80mm card slot spacing, can support large graphics card mining; 100M network card, supports the second and third generation CPUs. DDR3 notebook memory slot supports 1660, 2070,3090, rx580 and other full,series of graphics cards! The motherboard is compatible with the computer room standard 4U chassis. The motherboard is suitable for the mining industry due to its low price and rich expansion interfaces. Specification: Detailed interface: (1) Display interface: -compatible (2) USB rear: 2*USB2.0; 2*USB3.0 (3) Hard disk interface: 1*SATA3.0 (4) Hard disk interface: 1*MSATA (5) Network card interface: 1*LAN (6) Memory slot: DDR3 (7) CPU socket: LGA1155 (8) Chipset: BGA (B75) (9) BIOS initial restore: JCMOS (10) Graphics card interface: 8*PCIE_16X (80 pitch) (11) Mainboard/graphics card power supply: 6*POWER_PE (12) Self-initiated call: AUTO_ON Other detailed parameters: CPU platform: CPU type: LGA1155 pin CPU socket: LGA1155 Chipset: B75 Audio chip: N/A Network card chip: 1*REALIEK 8105E/8106E 100M network card (onboard network function) Maximum memory capacity: 8G Memory Support 1066/1333/1600MHz frequency Working environment: 0-95% relative humidity, non-condensing, -10C-60C Storage type interface: 1*SATA3.0; 1*MSATA Back I/O Ports: -compatible*1 USB2.0*2 USB3.0*2 LAN*1 Colour:Photo Color Material:plastic Size:16 x 80mm Package Contents: 1 * Miner Motherboard Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.