Motherboard chip: integrated sound card/network cardMain Chipset: For H81 seriesAudio chip: integrated 5.1 channel sound chipNetwork card chip: integrated 100M/Gigabit network card (random model, 't accept the specified)Processor Specifications:CPU socket: LGA2011-3. CPU Type: For Xeon V3 series and i7 series(Support such as 5820K 5960K/E5-2678 V3/E5 2676 V3/E5 2696 V3/E5 2629 V3/E5 2649 V3/E5 2668 V3 etc.(The i7 CPU cannot be used with server memory at the same time)Memory Specifications:Memory Type: Support DDR4 2666/2400/2133MHz (REG ECC or normal desktop memory)Memory slot: 4xDDR4 DIMMMemory capacity up to 4*32GExpansion Slots:1XPCIE X16 graphics card slot2XPCIE X1 graphics card slot2XUSB 2.0 slot (1 set)2XUSB 3.0 interface (1 group)2xSATA3.0+2XSATA2.0 interface2xM.2 PCIE+SATA each with 1 NVME high-speed interfaceI/O interface:PS/2 interface: PS/2 keyboard and mouse general interface1XRJ45 network interface4XUSB2.0 interface2XUSB3.0 interface5.1 channel audio interfaceOther parameters:Power socket: 1*8 pins (when only 4 pins are connected to the main CPU on the board)1*24 pin power connectorPower supply mode 6 itemsDifferent batches, product appearance and color may be different, does not affect the useColour:blackMaterial:PCBSize:236 x 186mmPackage Contents:1 x Motherboard1 x SATA Cable(the appearance and color are random, 't accept the specified )1 x Switch Cable(the appearance and color are random, 't accept the specified )1 x Baffle(the appearance and color are random, 't accept the specified )1 x Thermal Grease(the appearance and color are random, 't accept the specified )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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.