Features: Built-in JMS583 main chip ensures safe and stable up to 10Gbps USB 3.1 Gen2 transfer speed. Supports USPSP protocol + Trim acceleration command to speed up transmission instantly Built with write-protection switch which is useful for keeping the contents of your SSD safe from malware when you need to view them on a public computer. Built-in 3.3V 6000RPM silent fan for positive heat dissipation, for smart active when temperature is over 40 degree centigrade Widely for M.2 NVMe/ PCle SSD in for M for Key and size of 2280, 2260, 2242, 2230.( Not support NGFF / Sata SSD / Micron--M.2 SSD) Specifications: Item Type: NVME for M.2 SSD Heatsink Speed: USB3.1 Gen2 10Gbps Material: Aluminum Alloy Size: Pls see the pictures Color: As Pictures Quantity: 1 Pc Note: No retail package. 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! Package includes: 1 x Heatsink