Motherboard chip: Integrated chip network card Main chipset: For B250 Network card chip integrates RTL8105e and 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: 2 x DDR4 Expansion slot: 1 x PCI-E X16 graphics slot 11 x PCI-E X1 graphics slot 2 x USB2.0 pins 1 x USB3.0 pin 1 x COM pin 2 x 4p square power interface 4 x SATA3.0 interface I/O interface: PS/2 interface keyboard and mouse universal interface 2 1 x RJ45 network interface 1 x DVI HD output 2 x USB 3.0 interface 4xUSB 2.0 interface 1 x VGA The appearance of different batches of products may be different, which will not affect the use colour: black Material: PCB Size: 29.5x19cm Package Contents: 1 x Motherboard 1 x Thermal Pad(the color and appearance are random, don't accept the specified ones) 1 x SATA Cable(the color and appearance are random, don't accept the specified ones) Only the above package content, other products are not included. Note: Light reflection 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.