Fully compatible with for Thunderbolt 4/3 USB3.2/3.1/3.0/2.0 High-end single-core, fully compatible with all types of devices, breaking protocol limitations Efficient heat dissipation, stable operation without getting hot All-aluminum alloy body, equipped with exclusive cooling duct and intelligent temperature control fan, efficient heat dissipation 3G files are transferred in about 1 second, reaching a level of ultra-fast transmission speed Theoretical transmission speed 40Gbps, measured transmission speed up to 3000MB/S+ 8TB of large space expansion for unlimited storage data With up to 8TB of expandable capacity, it can accommodate all your work, study, and personal data. Store as you wish and embark on a journey of exciting digital life Product Name:M.2 USB4 High-Speed Hard Drive Enclosure Model:ITT21-U152 Support hard drive:M.2 2230 2242 2260 2280 NVMe Built-in interface:M.2 M-Key USB specifications:USB4/compatible with for Thunderbolt 4/3/USB3.2/3.0/2.0 USB transfer rate: 40Gbps (The product printed words may vary depending on the batch, but this does not affect use) Specification:B: upgraded model/A: professional model Color:As Shown Material:Aluminum Alloy Package Contents: 1 * M.2 NVMe Case 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.