StarTech.com S351BMU33ET · External drive enclosure

MPN / P/N

S351BMU33ET

Manufacturer designation

3.5" SATA Hard Drive Enclosure - eSATA / USB 3.0 - Trayless

Manufacturer conditions

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

Power source

AC Adapter Included

Input voltage

100 - 240 AC

Input current

0.8A

Output voltage

12V DC

Output current

2 A

Center Tip Polarity

Positive

Plug Type

M

Power — manufacturer row; verify unit in source

24

Colour

Black

Material

Steel

Product length

8.3 in [21.0 cm]

Product width

5.3 in [13.4 cm]

Product height

1.5 in [38.0 mm]

Product weight

17.4 oz [494 g]

Operating temperature

0C to 50C (32F to 122F)

Storage temperature

-20C to 55C (-4F to 131F)

Humidity

5% to 65%

Maximum documented data rate

6 Gbps

Type and rate

USB 3.0 (5Gbps)

UASP support

Yes

TRIM Support

Yes

S.M.A.R.T. Support

Yes

4Kn Support

Yes

Drive interface — source field designation

SATA III (6 Gbps)

Hot-swap capability — manufacturer conditions

Yes

Insertion Rating

50,000 cycles

Drive capacity — manufacturer-tested scope

Currently tested with up to 10TB 7200 RPM hard drives

Fans Included? Yes/No

No

Interface

USB 3.0 & eSATA

Bus type

USB 3.0 & eSATA

Number of drives

1

Drive size

3.5in

Compatible drive types

SATA

Drive installation

Removable

Chipset ID

ASMedia - ASM1153E; ASMedia - ASM1456

LED Indicators

1 - Power/Activity

Host Connector 1 (Quantity)

1

Host Connector 1

USB-B (5Gbps, 4.5W)

Host Connector 2 (Quantity)

1

Host Connector 2

eSATA (7-Pin)

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