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 , has a long service life, and is firm and stable in use. CPU socket type: LGA 2011 Chipset: For X99 Hard disk: 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 USB20, 4 x USB3.0 Disk build/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 COM 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 Note: Random color, don't accept the specified color. size: 290MM x 280MM Material: PCB colour: black Package Contents: 2 x Motherboard 2 x SATA Cable(random color and appearance) 2 x Switch Cable(random color) 2 x Baffle(random color and appearance) 2 x Thermal Grease(random color and appearance) 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.