Motherboard chip:Integrated chip network cardMain chipset: For B250Network card chip: integrates RTL8105e or other fast network cardsAudio chip: no sound cardProcessor specifications:CPU platform: For Core 6th Generation/Pentium/CeleronCPU socket: LGA 1151Support CPU quantity: 1Memory specifications:Memory type: DDR4 2133/2400/2800/3000 MHZ up to 16GMemory slot: 2xDDR4Expansion slot:1xPCI-E X16 graphics slot11xPCI-E X1 graphics slot2x USB2.0 pins1x USB3.0 pin1x COM pin2x4p square power interface4xSATA3.0 interface1xMSATA interfaceI/O interface:PS/2 interface keyboard and mouse universal interface 21xRJ45 network interface2xUSB 3.0 interface,2xUSB 2.0 interface1xVGAProduct size: 29.5 x 19cmcolor:BlackMaterial:PCBPackage Contents:1 x B250 motherboard1 x G3900 CPU1 x cooling fan1 x 8G DDR4 RAM1 x SATA cableOnly 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.