Docking Station"This is a external hard drive enclosure, and also as an offline clone duplicator.can be used as an external NVME SSD to expand your storage capacity, and used for offline backup data.Easy to monitor the SSD's clone progress with LED indicator. Warm Tip: Avoid lose your important data, please back up the data on the target disk before cloning. This M.2 hard drive enclosure is specially designed for M/B&M Key NVMe PCIe SSD(22110/2280/ 2260/ 2242). High performance, 20Gbps high speed, it support 2 2TB SSD capacity to transfer data. And M.2 hard disk reads and writes speed of most M2 NVMe SSDs is 992M/S. Offline clone or to expand storage capacity by connecting PC , Laptop computers, smart TVs, PS4, XBOX and other devices. The Hard drive disk external docking station is design with high quality aluminum alloy shell, it can dissipate heat quickly when tranfer data in high speed.Note: it is normal if you feel it's hot, as hot is made by hard disk during transfer data in high speed. This tool-free SSD Dual-bay docking station is easy to operate, tool-free, plug&play and hot swap,without any driver or software for operation. Name: NVME double disk cloning base Transmission interface: NVME Hard disk interface: M KEY, B&M KEY Input interface: USB3.2 Type-C Gen2 Support capacity: 2TB Support system: windows, for Mac, for Linux Applicable protocol: M.2 & M.3 NVME PCIE-E protocol Main control chip: JMS 586U Transmission speed: 20Gbps Colour:grey Material:aluminum alloy Size: 70 x 49 x 22mm Package Contents: 1 x NVMe Enclosure Clone 1 x data cable