StarTech.com S251BMU313 · External drive enclosure

MPN / P/N

S251BMU313

Manufacturer designation

USB 3.1 (10 Gbps) Enclosure for 2.5” SATA Drives - TAA

Manufacturer conditions

Windows 7 and earlier Windows versions do not support TRIM; with USB to SATA devices.

Power source

USB-Powered

Colour

Black

Material

Aluminum

Maximum drive height

0.4 in [9.5 mm]

Product length

4.8 in [12.3 cm]

Product width

3.0 in [75.0 mm]

Product height

0.5 in [12.0 mm]

Product weight

2.8 oz [78.0 g]

Operating temperature

0C to 40C (32F to 104F)

Storage temperature

-10C to 65C (14F to 149F)

Humidity

Operation Humidity: 10% ~ 90% RH; Storage Humidity: 5% ~ 95% RH

Maximum documented data rate

10 Gbps

Type and rate

USB 10Gbps

UASP support

Yes

TRIM Support

Yes

4Kn Support

Yes

Drive interface — source field designation

SATA III (6 Gbps)

Drive capacity — manufacturer-tested scope

Currently tested with hard drives up to 2TB at 7200 RPM

Fans Included? Yes/No

No

Interface

USB 3.2 Gen 2

Bus type

USB 10Gbps

Number of drives

1

Drive size

2.5in

Compatible drive types

SATA

Drive installation

Fixed

Chipset ID

Realtek - RTS9201

LED Indicators

1 - Power & Activity

Host Connector 1 (Quantity)

1

Host Connector 1

USB Micro-B (10Gbps, 4.5W)

Connector 1 (Quantity)

1

Connector 1

SATA (7-Pin + 15-Pin)

Documented selection limits

Match the exact host interface, peripheral/device protocol, connector, firmware, OS/driver and power requirements before ordering. Published maximum rates are interface limits, not guaranteed application throughput. No universal device or current/future OS compatibility is implied. Storage drive(s) are not included unless this exact SKU explicitly says so. Match 2.5/3.5 inch dimensions or M.2 key/length and SATA versus PCIe/NVMe protocol. USB-C connector shape does not guarantee Thunderbolt or USB4 compatibility. Check supplied adapter and host power requirements; UASP needs host/OS support.

Specification source: StarTech.com ↗
Checked against documentation: 16.10.2026