Description
The UGREEN CM642 (15976) USB4 M.2 NVMe SSD Enclosure is a high-performance storage enclosure designed to turn compatible M.2 NVMe SSDs into a fast and portable external drive. Powered by the ASM2464PD chipset, it supports USB4 connections with transfer speeds of up to 40Gbps, making it suitable for large file transfers, backups, gaming, and professional workloads. The enclosure supports M-Key and B+M Key NVMe SSDs in 2230, 2242, 2260, and 2280 sizes, with capacities up to 4TB. Its aluminum alloy construction works together with a silicone thermal pad and PWM-controlled turbo cooling fan to maintain stable temperatures during intensive use. It also supports UASP, TRIM, and S.M.A.R.T. monitoring for improved performance and SSD health management. With plug-and-play compatibility across Windows, macOS, Linux, and Android, the CM642 offers a versatile storage solution for laptops, desktops, and USB-C-compatible gaming devices.
Specifications
| Specification | Details |
|---|---|
| Brand | UGREEN |
| Model | CM642 (15976) |
| Type | M.2 NVMe SSD Enclosure |
| Material | Aluminum Alloy + Silicone Thermal Pad |
| Color | Gray |
| Interface | USB Type-C |
| Chipset | ASM2464PD |
| Supported SSD Type | M-Key & B+M Key NVMe SSD |
| SATA / mSATA Support | Not Supported |
| Supported SSD Sizes | 2230 / 2242 / 2260 / 2280 |
| Maximum Capacity | Up to 4TB |
| Maximum Transfer Speed | Up to 40Gbps |
| USB Compatibility | USB4 / USB 3.2 / USB 3.1 / USB 3.0 / USB 2.0 |
| Thunderbolt Compatibility | Thunderbolt 3 / Thunderbolt 4 |
| Supported Protocols | UASP, TRIM |
| Cooling System | Aluminum casing + Silicone thermal pad + Turbo cooling fan |
| Fan Type | PWM Turbo High-Speed Fan |
| Fan Control | Intelligent PWM automatic speed adjustment |
| Temperature Control | Automatic temperature detection and fan adjustment |
| S.M.A.R.T. Monitoring | Supported |
| Power Supply | USB Bus-powered |
| Plug & Play | Yes |
| Operating Systems | Windows / macOS / Linux / Android |
| Compatible Devices | Laptops / Desktops / Gaming Consoles with USB-C |
| Data Security | Self-monitoring with temperature management |
USB4 40Gbps High-Speed Performance
The CM642 supports USB4 connectivity with transfer speeds of up to 40Gbps, providing fast data movement for large files, applications, backups, and media projects. It is also backward compatible with multiple USB standards for greater flexibility.
Wide M.2 NVMe SSD Compatibility
This enclosure supports M-Key and B+M Key NVMe SSDs in 2230, 2242, 2260, and 2280 sizes. It supports capacities of up to 4TB, allowing users to build a high-capacity portable storage solution.
Advanced Triple Cooling System
For improved thermal performance, the CM642 combines an aluminum alloy enclosure, silicone thermal pad, and turbo cooling fan. This three-part cooling system helps dissipate heat generated by the SSD during demanding workloads.
Intelligent PWM Fan Control
The built-in PWM turbo high-speed fan automatically adjusts its speed according to temperature. This helps maintain stable operating temperatures while keeping unnecessary fan noise under control.
SSD Health & Performance Management
The enclosure supports S.M.A.R.T. monitoring for drive health detection and TRIM optimization to help maintain SSD performance and longevity. These features make it suitable for regular storage, backup, and intensive data-transfer tasks.
Plug-and-Play Convenience
The CM642 is designed for easy operation without requiring additional drivers. Simply install a compatible NVMe SSD and connect the enclosure through USB Type-C for convenient external storage access.
Broad Device Compatibility
With support for Windows, macOS, Linux, and Android, the enclosure works with a wide range of devices. It can be used with compatible laptops, desktops, and gaming consoles equipped with USB-C connectivity.











