40Gbps USB Type C Interface M.2 NVMe enclosure: Up to 40Gbps Exterme-speed M.2 NVME, the theoretical read and write speed can reach 3000MB/s. Great for turning your internal SSD into a portable external ssd and storing data. It is also compatible with Thunderbolt3/4, USB3.2/3.1/3.0/2.0 interfaces (Please be sure to use USB4.0 interface or Thunderbolt3 interface to achieve 40Gbps. Backward compatibility limit the speed.) (the USB port requires an adapter or cable for use). Note: M-key connector , Only support Nvme Protocol, not support m.2 sata ssd. Plug and play, no drive and power supply required. Colour:grey Material:Aluminum alloy Size:100 x 48.5 x 13.5mm Package Contents: 2 x USB4.0 SSD enclosure 2 x Cable 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.