40Gbps High Speed:USB4 interface, the transfer speed can reach 40Gbps,Complete file transfers quickly,About 8 times faster than conventional USB3.0 standard interface transfer speeds Built-in Cooling Fan:Rapid heat dissipation through vents on both ends of the SSD enclosure,Avoiding high heat generation and affecting transmission speeds.Note:You don't need to install thermal grease on your SSD to avoid affecting the air duct ventilation Up to 4TB Expansion:We recommend that you use an M key/ key NVMe SSD of up to 4TB.This is an SSD enclosure only and does not include any NVMe SSDs Tool-free Installation:No need to remove and install screws, use the card pin to complete the installation, easy to operate. The built-in cooling fan also eliminates the need to install thermal grease yourself Support: NVMe Protocol Output: USB4.0 Type C Input: M Key / M+B Key Compatible: M.2 2242/2260/2280 SSD Capacity Support: Up to 4TB Transmission Rate: 40Gbps Cable: Type C to Type C Supported System: for Win/IOS/Linux/Android etc. (The product printed words depending on the batch, but this does not affect use) Color: As Shown Material: Aluminum Alloy Package Contents: 1 * USB-C M.2 NVMe SSD 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.