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Product specifications

StarTech.com M.2 SSD Enclosure for M.2 SATA Drives - USB 3.1 (10Gbps) - USB-C

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StarTech M.2 SSD Enclosure for M.2 SATA Drives - USB 3.1 G - USB-C - Portable M.2 External Enclosure (SM21BMU31CI3)

Part SM21BMU31CI3 · UPC 065030883047

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  • ADD EXTERNAL STORAGE TO YOUR USB-C LAPTOP: Turn your M.2 NGFF SATA drive into high performance external storage with this M.2 SSD enclosure; Connect it to your MacBook, Dell XPS or other USB Type-C device. Compatible with Thunderbolt 3 USB-C ports
  • CONNECT TO YOUR M.2 SATA SSD OVER USB 3.2 GEN 2: Experience full SATA III performance from your M.2 SATA SSD over a USB 3.2 Gen 2 (10 Gbps) host connection; Backward compatible with SATA I/II and USB 3.0; Includes mounting screws and screwdriver
  • TRULY PORTABLE: The compact design (4x2x1.5in/ 11x5x1.4 cm) makes this M.2 SATA hard drive enclosure easily portable; The integrated USB-C cable (6in/15.2cm), means you're always ready to plug it in, without having to remember to bring along a cable
  • DURABLE ALUMINUM: With this robust SATA M.2 external enclosure, your drive is encased in an aluminum and plastic housing; The built-in ventilation holes aid in heat dissipation to provide an optimum operating temperature for your drive
  • BROAD M.2 SATA SSD COMPATIBILITY: The M.2 SATA NGFF SSD enclosure supports common M.2 SATA SSDs (B Key / B+M Key) and multiple drive lengths including: 42 mm (2242), 60 mm (2260), and 80 mm (2280); NOTE: Not compatible with M.2 NVMe or AHCI PCI Express SSDs

About this product

Portable M.2 SATA to USB Adapter | Attached USB-C Cable

Add high-performance external data storage to your USB-C laptop, tablet or desktop computer, with this SATA M.2 SSD enclosure. It lets you use your SATA M.2 drive as an ultra-fast external storage solution over a USB 3.1 Gen 2 connection. It’s ideal for your MacBook, Dell XPS, Chromebook Pixel or other USB Type-C device.

Truly Portable

The compact M.2 SATA to USB adapter is easily portable and gives you high-speed access to your data, wherever you go. The integrated USB-C cable (6"/15.2 cm), means you’re always ready to plug it in, without having to remember to bring along a cable.

Durable Aluminum Design

The sturdy aluminum and plastic enclosure encases your M.2 SATA SSD and features built-in ventilation that improve heat dissipation to help keep your drive at a suitable operating temperature.

Use your M.2 SATA Drive for External Storage

Easily use your M.2 SATA drive as external data storage. This M.2 NGFF SSD enclosure provides a simple connection to your M.2 SATA SSD over USB 3.1 Gen 2. You can transfer files quickly, without bottlenecks, using a SATA M.2 SSD as your external drive.

Broad Compatibility

The enclosure supports common M.2 SATA SSDs and multiple drive lengths, including: 42 mm (2242), 60 mm (2260), and 80 mm (2280). The USB to M.2 SATA enclosure works with USB-C host devices and is also compatible with Thunderbolt 3 USB-C ports.

SM21BMU31CI3 is backed by a 2-year StarTech.com warranty and free lifetime technical support.

Manufacturer warranty information

2 Years

Storage

Number of storage drives supported
1
Storage drive size
M.2
Supported storage drive interfaces
M.2

Ports & interfaces

USB connectivity
Yes
USB version
3.2 Gen 2 (3.1 Gen 2)
USB connector type
USB Type-C
USB connector gender
Male
Integrated USB cable
Yes

Design

Product type
SSD enclosure
Product colour
Black
Material
Aluminium
LED indicators
Activity, Power
Certification
REACH, CE, FCC

Performance

Data transfer rate
6 Gbit/s
Chipset
JMicron - JMS580
UASP support
Yes
Mean time between failures (MTBF)
50000 h
Plug and Play
Yes

Power

Power source type
USB

Operational conditions

Operating temperature (T-T)
5 - 35 °C
Storage temperature (T-T)
-20 - 50 °C
Operating relative humidity (H-H)
20 - 80%

Weight & dimensions

Width
110 mm
Depth
50 mm
Height
14 mm
Weight
95 g
Cable length
0.145 m
Package width
142 mm
Package depth
170 mm
Package height
30 mm
Package weight
110 g

Packaging content

Screws included
Yes
Screwdriver included
Yes
Manual
Yes

Technical details

Compliance certificates
RoHS

Logistics data

Harmonized System (HS) code
84733080
Master (outer) case width
335 mm
Master (outer) case length
360 mm
Master (outer) case height
320 mm
Products per master (outer) case
40 pc(s)

Specifications and images: Database Right data-sheet 2026 Icecat. All rights reserved. Supplied as is, without warranty. Specs Icecat · Open Content License

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