UGREEN CM642 (15975) 20Gbps M.2 NVMe & SATA SSD Enclosure
The UGREEN CM642 (15975) M.2 NVMe & SATA SSD Enclosure is a high-speed dual-protocol external SSD case designed for users who want to convert an M.2 drive into fast portable USB storage. Exact-model listings for CM642 / 15975 consistently identify it as supporting both M.2 NVMe and M.2 SATA/NGFF SSDs, with a USB 3.2 Gen 2×2 interface rated up to 20Gbps.
It is suitable for portable storage, large-file transfer, backup, data migration, drive cloning and reusing M.2 SSDs from laptops or desktop PCs.
Up to 20Gbps USB 3.2 Gen 2×2
The CM642 uses a USB 3.2 Gen 2×2 Type-C interface, giving it up to 20Gbps theoretical host bandwidth with a compatible 20Gbps USB port.
Actual transfer performance depends on the SSD, host USB controller, cable, workload and thermal conditions.
Supports Both NVMe and SATA M.2 SSDs
A key advantage of this exact model is dual-protocol support:
- M.2 NVMe SSD
- M.2 SATA / NGFF SSD
That makes it more flexible than NVMe-only enclosures.
RTL9210B Dual-Protocol Controller
Detailed exact-model listings specify the Realtek RTL9210B controller, which supports both NVMe and SATA M.2 protocols in one enclosure.
Supports 2230 / 2242 / 2260 / 2280 SSDs
The CM642 supports the common M.2 sizes:
Up to 4TB Capacity
Current detailed listings specify support for up to 4TB SSD capacity.
Tool-Free Installation
The enclosure uses a tool-free push-button / quick-release design, making SSD installation and removal easier without repeatedly using screws.
Aluminum Alloy Cooling
The CM642 uses an aluminum shell and includes a silicone thermal pad to help transfer heat away from the SSD during sustained operation.
UASP and TRIM Support
Detailed listings specify support for:
These can help improve storage efficiency and SSD management on compatible systems.
Auto Sleep Function
The enclosure is listed with an automatic sleep function after about 15 minutes of inactivity, helping reduce power draw and unnecessary heat.
USB-C and USB-A Host Compatibility
The package is listed with a 2-in-1 USB-C / USB-A cable, giving users flexibility to connect to both newer USB-C systems and older USB-A ports.
Key Features
- Brand: UGREEN
- Model: CM642
- SKU: 15975
- Dual-protocol M.2 enclosure
- Supports NVMe + SATA/NGFF
- USB 3.2 Gen 2×2
- Up to 20Gbps theoretical bandwidth
- RTL9210B controller
- Supports 2230 / 2242 / 2260 / 2280
- Up to 4TB capacity
- Tool-free installation
- Aluminum alloy housing
- Silicone thermal pad
- UASP support
- TRIM support
- Auto sleep
- White LED activity indicator
- USB-C / USB-A host cable included
Specifications
Brand: UGREEN
Model: CM642
SKU: 15975
Product Type: M.2 SSD Enclosure
Supported Protocols: NVMe PCIe + SATA/NGFF
Supported Keys: M-Key / compatible M+B Key depending on SSD protocol
Supported Sizes: 2230 / 2242 / 2260 / 2280
Maximum Capacity: Up to 4TB
Host Interface: USB 3.2 Gen 2×2 Type-C
Maximum Interface Bandwidth: Up to 20Gbps
Controller: RTL9210B
UASP: Supported
TRIM: Supported
Installation: Tool-Free
Cooling: Aluminum Shell + Silicone Thermal Pad
Auto Sleep: Approx. 15 Minutes
Indicator: White LED
Dimensions: Approx. 122 × 40 × 14mm
Weight: Approx. 126g
Color: Dark Gray / Aluminum Finish
Warranty: 1 Year in current Bangladesh listing
Package Contents
- 1 × UGREEN CM642 (15975) SSD Enclosure
- 1 × Silicone Thermal Pad
- 1 × 2-in-1 USB-C / USB-A Cable
- SSD Fixing Accessories
- User Documentation
Important Speed Note
The 20Gbps figure is the maximum theoretical USB interface bandwidth.
It does not mean every SSD will transfer at 20Gbps.
For NVMe SSDs, actual speed depends on the SSD and host. For M.2 SATA SSDs, performance remains limited by the SATA protocol even though the same enclosure supports a 20Gbps USB host interface.
Important Compatibility Note
This exact CM642 / 15975 supports both NVMe and SATA/NGFF M.2 SSDs according to multiple current exact-model listings. moharaz.com.bd
It does not support:
- mSATA
- 2.5-inch SATA drives
- 3.5-inch SATA drives
Important Gadget & Tech Correction
Your current Gadget & Tech listing for UGREEN CM642 (15975) says:
“Supports M.2 NVMe SSDs Only”
but the exact-model references identify CM642 / 15975 as NVMe + SATA/NGFF dual-protocol.
So change it to:
Compatibility: Supports M.2 NVMe & SATA/NGFF SSDs
Also, do not confuse it with UGREEN CM642 (15976), which is the separate 40Gbps USB4 NVMe enclosure shown on your own site.
UGREEN CM642 15975 Price in Bangladesh
If you are searching for the UGREEN CM642 15975 price in Bangladesh, this enclosure is a strong option for users who want one portable case that works with both NVMe and SATA M.2 SSDs.
With 20Gbps USB 3.2 Gen 2×2, RTL9210B dual-protocol controller, 2230–2280 SSD support, tool-free installation and aluminum cooling, the CM642 is suitable for backups, portable storage and large-file transfers.
Buy the UGREEN CM642 (15975) M.2 NVMe & SATA SSD Enclosure in Bangladesh from Gadget & Tech and check the latest price, stock availability and warranty before ordering.
