Features: According to international standards, the theoretical transmission speed of USB4 is 40Gbps, and the measured reading and writing speed can reach 3000Mb Original heat dissipation vest ,all aluminum with a silicone pad designs for efficient heat dissipation, ensuring continuous and strong performances Adopting USB4 TypeC interfaces, supporting Thunderboltcompatible4/3 speed is 4 times faster than USB3.2 and 8 times faster than USB3.0 Supports M.2 NVMe solid drives 2280/2260/2242/2230; Supports M.2NVME protocol up to 4TB Equipped with UASP and TRIM functions, it can reduce load, reduce the number of erasable writes, and achieve faster and more durable speed Specifications: Model: USB4.0 M.2 NVMe Hard Disk Case Supported hard disk capacity: support 4TB External interface: USB4.0 TypeC Shell-material: Aluminum-alloy Transmission rate: Support 40Gbps Compatibility: Thunderboltcompatible4/3 Size：as Pictures Types: Standard / Upgraded Version Package Includes: 1 Set M.2 SSD Enclosure note: Note: NOT Included M.2 SSD, Only SSD Case Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!