NGFF/NVME compatible hard drive enclosure, M.2 corresponds to two different hard drives. It supports M.2 NVME or NGFF (SATA) in 2230/2242/2260/2280mm sizes. Compatible with B-key, M-key and B+M-key. Meet the needs of different scenarios and save time, effort and money by eliminating the need to deploy two additional hard drives! Note: PCI-E AHCI protocol is not supported. The external output port is USB3.1 GEN2 USB Type-A. The theoretical transfer speed is 10 Gbps for NVME protocol and 5 Gbps for NGFF protocol, with a substantial increase in read speed and a rise in transfer speed for large files; using RTL9210B chip with UASP and TRIM functions. Reduced CPU load, lower consumption, faster speed and higher durability. Up to 4TB SSD can be installed. backward compatible with USB3.0/USB2.0 interface, read speed: 1000MB/s (This data is for reference only). Compatible with Windows 7/8/10 / Mac OS / Linux systems.