UGREEN CM400 M.2 NVMe Enclosure – 10Gbps USB-C, Tool-Free (Space Grey)
The UGREEN CM400 is a compact, aluminium M.2 NVMe enclosure that converts a bare M-Key PCIe NVMe SSD into a portable USB-C external drive. It connects to a host computer via USB-C at up to 10Gbps, delivering read and write speeds of 900–998 MB/s — fast enough to transfer 10GB of data in approximately ten seconds. Consequently, it suits professionals upgrading a laptop SSD, system builders cloning drives, photographers offloading large RAW libraries, and IT technicians managing data recovery workflows.
Technical Specifications
Enclosure & Interface
| Specification | Detail |
|---|---|
| Model | UGREEN CM400 (10902) |
| Host Interface | USB-C 3.1 Gen 2 (USB 3.2 Gen 2) |
| Data Transfer Speed | Up to 10Gbps |
| Real-World SSD Speeds | 900–998 MB/s read and write |
| Chipset | ASM2362 |
| Thunderbolt 3 Compatible | Yes |
| Backwards Compatible | USB 3.0, USB 2.0, USB 1.1 |
SSD Compatibility
| Specification | Detail |
|---|---|
| Supported Interface | M.2 NVMe PCIe (Gen 3) |
| Supported Keys | M-Key; M+B Key (NVMe PCIe only) |
| Supported Form Factors | 2230, 2242, 2260, 2280 |
| Maximum Capacity | 2TB |
| Not Supported | M-Key SATA, B-Key NGFF/SATA, PCIe AHCI, mSATA |
Performance & Features
| Specification | Detail |
|---|---|
| UASP Support | Yes (70% faster read, 40% faster write vs USB 3.1) |
| TRIM Support | Yes |
| S.M.A.R.T. Support | Yes |
| LED Indicator | White — flashing = active data transfer |
| Driver Required | No (plug and play) |
Physical
| Specification | Detail |
|---|---|
| Casing Material | Aluminium alloy |
| Colour | Space Grey |
| Dimensions | Approx. 119 × 37 × 12mm |
| Weight | Approx. 45g |
| Installation | Tool-free (rotating clip and rubber fasteners) |
| OS Compatibility | Windows, macOS, Linux |
In the Box
| Item | Detail |
|---|---|
| USB-C to USB-C Cable | 50cm |
| USB-A to USB-C Cable | Included |
| Rubber Fasteners | For SSD retention |
Use Cases & Applications
Laptop SSD Upgrade and Drive Cloning
When upgrading a laptop’s internal NVMe SSD, the CM400 provides the fastest available connection for cloning the existing drive to the replacement. At 900+ MB/s sustained throughput, a full 500GB clone completes in under ten minutes using standard disk imaging software. Additionally, the enclosure serves as a retention solution for the old SSD after the upgrade, giving the drive a second life as high-speed portable external storage.
Portable High-Speed Storage for Content Creators
Photographers and video editors working with large RAW files, 4K footage, or multi-layer project archives benefit significantly from NVMe speeds at this interface. Unlike SATA-based enclosures capped at 550 MB/s, the CM400 allows NVMe drives to operate at close to their rated speeds. Furthermore, the compact aluminium chassis fits easily into a laptop bag alongside other accessories, making it a practical on-location storage tool.
Data Recovery and IT Maintenance
IT technicians use the CM400 to access NVMe drives removed from laptops or desktops for diagnostics, data extraction, and forensic work. The S.M.A.R.T. monitoring support allows compatible software — including CrystalDiskInfo on Windows and DriveDx on macOS — to read drive health attributes without reinstalling the SSD into a host machine. Tool-free installation means drives can be swapped rapidly across multiple enclosures or workstations.
Storage Expansion for USB-C-Only Laptops
MacBooks, thin-and-light Windows laptops, and Chromebooks with only USB-C ports connect directly using the included C-to-C cable at full 10Gbps throughput. However, where a USB-A port is the only available option — such as on older desktops — the included USB-A to USB-C cable allows connectivity at USB 3.0 speeds (5Gbps), which remains substantially faster than a USB 2.0 connection.
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