Model: X99-BD4 V1.1 Motherboard CPU Socket:Support LGA2011-3 Xeon Memory Socket:4 DDR4 Memory Socket Memory Standard:Support Four Channels DDR4 2400/2133/1866 MHz Maximum Memory Capacity 4*32G SATA:4*SATA3.0 Interface; 2*SATA2.0 Interface Extended interface:IO: 2* USB3.0, 6*USB2.0, 1*Gigabit Ethernet Card, 3*3.5MMAudio interface;Expansion pin: 1*9pin USB2.0; 1*19pin USB3.0; 1*Front audio output pin Expansion Slots:2*PCI Express3.0x16, 1*PCI Express2.0X1, 1*PCI Express3.0x4, 1*M.2 NVME (X43.0) , 1*M.2 NGFF(SATA3.0) Soud Track:ALC662 5.1 Sound Track Network Interface:RTL8111G Gigabit Ethernet Card Power interface:24pin+8pir Fan interface:4 PCB layer:10 layer, 6Phases Colour: black Material: PCB+plastic+metal Package Contents: 1 x X99-BD4 Motherboard Note: X99-AD3/AD4/BD3/BD4 motherboard size is 283mmx215mm. Not standard ATX size. Make sure your case can be installed with this motherboard. Please read it carefully when purchasing. if there is no confirmation before purchase then incompatible happen when you receive the motherboard Note: The platform needs powerful power. Please make sure your power supply is sufficient to support it(at least 500w power supply). Due to different production batches, the accessories on the motherboard may be different from the pictures, which does not affect the use 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.