Motherboard chip: Integrated chip network card Main chipset: For B250 Network card chip: integrates RTL8105e or other fast network cards Audio chip: no sound card Processor specifications: CPU platform: For Core 6th Generation/Pentium/Celeron CPU socket: LGA 1151 Support CPU quantity: 1 Memory specifications: Memory type: DDR4 2133/2400/2800/3000 MHZ up to 16G Memory slot: 2xDDR4 Expansion slot: 1xPCI-E X16 graphics slot 11xPCI-E X1 graphics slot 2x USB2.0 pins 1x USB3.0 pin 1x COM pin 2x4p square power interface 4xSATA3.0 interface 1xMSATA interface I/O interface: PS/2 interface keyboard and mouse universal interface 2 1xRJ45 network interface 2xUSB 3.0 interface 4xUSB 2.0 interface 1xVGA The appearance of different batches of products may be different, which will not affect the use color:Black Material:PCB size:29.5 x 19cm Package Contents: 1 x Motherboard 1 x Switch Cable with Light(Random color and random appearance, no option to specify color and appearance) 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.