STARTECH 

STARTECH SM21BMU31C3 USB 3.1 M.2 SSD ENCLOSURE FOR USB-C ENABLED HOST

Mfg Part Number:  SM21BMU31C3  
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Price: $64.99 + Free Shipping
Quantity:
In Stock: 1053
Last Updated: Oct 31, 2025
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This compact M.2 SATA SSD enclosure lets you add highly portable data storage to any laptop or computer with a USB-C™ port - such as MacBook, Chromebook Pixel™, Dell™ XPS laptops, and many others. It turns your SATA M.2 drive into a high-speed storage solution over a USB 3.1 Gen 2 connection, at up to 10Gbps throughput.

A truly portable solution

This slim, pocket-sized enclosure for M.2 NGFF SATA SSDs has been specially designed for mobility, with a small form factor design that fits easily into your laptop bag. Its lightweight yet durable aluminum housing helps to ensure your drive won't be damaged while you're on the move.

Ventilation holes help to dissipate heat and help ensure an optimum operating temperature.

Maximize the performance of your M.2 SATA SSD

Leverage the speed of your M.2 NGFF SATA drive with this external enclosure. It delivers USB 3.1 Gen 2 data transfer speeds up to 10Gbps as well as UASP support, so you can achieve higher transfer speeds when you connect it to a UASP-enabled host computer.

The enclosure works with tablets, laptops and desktop computers and is compatible with hosts equipped with Thunderbolt 3 USB-C ports.

Broad compatibility

The enclosure is compatible with all of the common M.2 SATA SSDs, and enables you to mount multiple drive lengths, including: 30mm (2230), 42mm (2242), 60mm (2260), and 80mm (2280).

The SM21BMU31C3 is backed by a 2-year StarTech.com warranty and free lifetime technical support.

More from the Manufacturer

More from the Manufacturer

Main Specification
General Information
Manufacturer StarTech.com
Manufacturer Part Number SM21BMU31C3
Manufacturer Website Address http://www.startech.com
Brand Name StarTech.com
Product Name M.2 NGFF SATA Enclosure - USB 3.1
Packaged Quantity 1 Each
Product Type Drive Enclosure
Technical Information
Number of Solid State Drive Supported 1
Number of Solid State Drive Installed No
I/O Expansions
Number of Total Expansion Bays 1
Network & Communication
Wireless LAN No
UASP Support Yes
Interfaces/Ports
Drive Interface SATA/600
Drive Interface M.2
Host Interface USB 3.1 Micro-B
Physical Characteristics
Color Family Dual Color
Product Color Black
Product Color Silver
Product Material Aluminum
Form Factor External
Height 0.5"
Width 1.7"
Depth 3.9"
Weight (Approximate) 2.20 oz
Miscellaneous
Package Contents
  • M.2 NGFF SATA Enclosure - USB 3.1
  • 1 x USB C To Micro B Cable
  • 1 x M.2 Screw Kit
  • 1 x Screw Driver
  • 1 x Quick Install Guide
Country of Origin Taiwan
TAA Compliant Yes
Environmentally Friendly Yes
Environmental Compliance Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)
Environmental Compliance Restriction of Hazardous Substances (RoHS)
Environmental Compliance Waste Electrical and Electronic Equipment Directive (WEEE)
Warranty
Limited Warranty 2 Year
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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