Processor: Supports all processors of the LGA1151 series Chipset: using for B250 high-speed chipset Memory: 2*DDR4 DIMM memory slot, support 2133/2400MHZ memory, maximum support 16GB Display chip: integrated for HD Graphics core Display output: -compatible/12*USB3.0 to PCI-E16X Storage: 4*SATA hard disk interface,1*MSATA interface I/O interface: 2*USB3.0 interface; 2*USB2.0 interface; 1*-compatible interface; 1*PS/2 interface,1*VGA interface Built-in I/O interface: 1*USB2.0 pin; 1*COM pin; 1*F-PANEL front panel function button and indicator plug Needle BIOS: 64mb Flash ROM Power supply type: support ATX24P+ATX4P, 12V+ATX6P The appearance and color of different batches of products may be different, which will not affect the use Ps: 1. N card: refers to the graphics card product developed by for company. 2. A card: refers to the graphics card product developed by for AMD company. Note: since the windows driver can only support 8 cards at most, the mining combination of 12 cards is generally (6N + 6A (8N + 4A, 8A + 4N) (7N + 5A, 7A + 5N) Colour:black Material:PCB Size: 230x185mm Package Contents: 1 x Motherboard 1 x G3900 CPU 1 x USB Drive(the appearance and color are random, don't accept the specified ) 1 x SATA Cable(the appearance and color are random, don't accept the specified ) 1 x Switch Cable(random colors, don't accept the specified color) 1 x Baffle(the appearance and color are random, don't accept the specified ) 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.