Support 8 DDR4 ordinary/server memory modules, a single memory module supports up to 32GB, and the frequency is support 2133/2400/2800 CPU support: E5-2678V3..E5-2696V3..E5-2629V3..E5-2666V3..E5-2668V3 (not included) Integrate 1 REALTEK 8106E 100M network card/8111H dryM network card This product uses high-quality materials, is durable, has a long service life, and is and stable in use. CPU socket type: LGA 2011 Chipset: For X99 : 6 x SATA3.0 interface, 1 x M.2 interface (support PCIE only), 1 x M1 interface (support PCIE and SATA) USB interface: 4 x USB2.0, 4 x USB3.0 Disk /mouse: support 1inch PS/2 button mouse interface AUDIO: 1 x F AUDIO standard audio three-in-one high-fidelity audio interface Expansion bus: 1 x pin, 2 x PCIE 16X and 2PCIE interface Note: The appearance and color of different batches of products may be different, which does not affect the use Colour:black Material:PCB Size: 290MM x 280MM Package Contents: 1 x Motherboard 2 x E5 2620 V3 CPU 1 x DDR4 4G RECC RAM(the appearance and color are random, 't accept the specified ) 1 x SATA Cable(the appearance and color are random, 't accept the specified ) 1 x Switch Cable(random colors, 't accept the specified color) 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 ) 2 x Thermal Pad(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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.