Supports two M.2 storage protocols,Supports fast conversion between NVME M.2 and SATA M.2,When switching to NVME M.2, the read speed is up to 32Gbps or s, and SATA M.2 is 22Gbps or s. Powerful core,support E5 2678 V3 or E5 2629 V3 or E5 2649 V3 or E52676 V3 or E5 2673 V3 or E5 2666 V3 or E5 2630 V3 or E5 2640 V3 or E5 2650 V3... Super power supply,Adopting 6-phase power supply combination and all solid-state capacitors, the equipment has a long service life and durability. Dual channel,Supports 2133MHz or 2400MHz or 2666MHz memory.With E5 2666v3 CPU Processor Full of materials, The size of the PCB circuit board is increased, the layout of special components and wires is reasonable, the impedance is increased, the heat dissipation is faster, and the product life is increased. Motherboard model:X99-PR9 Motherboard Specifications and dimensions:FlexATX 215mm x 185mm CPU socket:LGA 2011-3 SATA interface:SATA 3.0x3 Rear USB:USB 2.0x6 or USB 3.0x2 Front USB:USB 3.0 or USB 2.0 fan pin:4 pinsx2 Graphics card slot:PCI E X16x1 or PCIE X1x1 PCB thickness:4 layer PCB Power supply interface:24-pin motherboard power supply or 8-pin CPU power supply PS or 2 interface:2 PS or 2 mouse and keyboard ports memory frequency:2133 or 2400 or 2666Mhz The product appearance and printed words depending on the batch, but this does not affect use. Colour:As Shown Material:PCB Package Contents: 1 x motherboard 1 x baffle 1 x cable 1 x processor 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.