---
product_id: 388059707
title: "StarTech.com 3.5\" External SATA Hard Drive Enclosure - Trayless - eSATA/USB 3.0 (USB 3.1 Gen 1) Hard Drive Enclosure w/UASP (S351BMU33ET)"
brand: "startech"
price: "€ 227.38"
currency: EUR
in_stock: true
reviews_count: 5
category: "Star Tech"
url: https://www.desertcart.it/products/388059707-startech-com-3-5-external-sata-hard-drive-enclosure-trayless
store_origin: IT
region: Italy
---

# 6 Gbps SATA III speed Trayless hot-swap design Fanless quiet operation StarTech.com 3.5" External SATA Hard Drive Enclosure - Trayless - eSATA/USB 3.0 (USB 3.1 Gen 1) Hard Drive Enclosure w/UASP (S351BMU33ET)

**Brand:** startech
**Price:** € 227.38
**Availability:** ✅ In Stock

## Summary

> 🚀 Unlock lightning-fast, tool-free storage access—because your data deserves the VIP treatment!

## Quick Answers

- **What is this?** StarTech.com 3.5" External SATA Hard Drive Enclosure - Trayless - eSATA/USB 3.0 (USB 3.1 Gen 1) Hard Drive Enclosure w/UASP (S351BMU33ET) by startech
- **How much does it cost?** € 227.38 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/388059707-startech-com-3-5-external-sata-hard-drive-enclosure-trayless)

## Best For

- startech enthusiasts

## Why This Product

- Trusted startech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Sleek:** Minimal desk footprint with a stylish black metal finish that complements any setup.
- • **Blazing Fast Transfers:** Up to 6Gbps SATA III & 5Gbps USB 3.0 speeds keep your workflow seamless.
- • **Universal Compatibility:** Works flawlessly with SATA I, II, III drives and both USB 3.0 & eSATA interfaces.
- • **Whisper-Quiet Workspace:** Fanless metal enclosure keeps noise low so you stay focused on what matters.
- • **Effortless Drive Swapping:** Trayless design means no tools, no fuss—swap HDDs in seconds like a pro.

## Overview

The StarTech.com 3.5" External SATA Hard Drive Enclosure offers ultra-fast data transfers up to 6Gbps via SATA III and 5Gbps over USB 3.0, with universal compatibility across SATA generations and interfaces. Its innovative trayless design enables quick, tool-free swapping of 3.5" HDDs, while the fanless metal enclosure ensures silent operation and a sleek, space-saving profile. Ideal for professionals needing reliable, high-speed external storage with plug-and-play ease.

## Description

This external hard drive enclosure for 3.5 in. SATA HDDs is perfect for office, government, medical, and other personnel who require quick and easy access to important data and files. It is ideal if you need easy access to your data or need to back up, archive, or recover data and multimedia content. The external 3.5" hard drive enclosure supports USB 3.0, also known as USB 3.1 Gen 1, and eSATA, allowing you to access your data through your preferred interface. For fast performance and efficient data transfers, when connected through eSATA, the USB 3.1 Gen 1 enclosure supports full SATA III transfer speeds - up to 6Gbps. For universal compatibility, the hard drive enclosure can be connected through USB 3.0 with transfer speeds up 5Gbps, plus support for UASP. The eSATA enclosure lets you connect a SATA III (6Gbps) hard drive but is also compatible with SATA I and II. The external hard drive enclosure allows you to swap drives in and out as needed with the trayless design. The enclosure is simple to set up and easy to use, with its plug-and-play functionality. It’s is also equipped with an LED light to indicate power and activity. With a sleek, compact style, this 3.5" hard drive enclosure is a perfect desktop companion for your Mac or PC. It occupies minimal space and features a fanless design that keeps the enclosure quiet so you to focus on what’s important. The USB 3.1 Gen 1 enclosure is backed by a StarTech.com 2-year warranty and free lifetime technical support.

Review: After testing, the digital electronics seem good. It does get hot with high power hard drives (e.g. 7200 RPM drives ) as there is really little thermal connectivity between the drive and the metal outer case as it is basically in a bubble of air. As in another review, there is a place (under the back sticker) to install a 30mm by 10mm thick 12v fan (has fan retention clips, fan holes and, a fan grate), so I installed a Delta fan. Unfortunately, there is no fan header on the enclosure's motherboard, so I hardwired the fan to the motherboard's incoming positive terminal (with a disconnect so you can take the closure completely apart easily) and hardwired (splice) to the power switch wire (switched negative). Temperature dropped way down (50+C --> 35C).
Review: I now have three of these, two in use one for backup and I've been very pleased with their performance. In my practical testing of it I've found the speed difference between eSATA and USB 3.0, the fastest my PC supports, using a SATA III HDD, is minimal. That maybe one of the reasons why Startech decided to discontinue the eSATA support. However their replacement USB 3.1 Gen 2 only enclosure is not in the same class IMHO. The case for that even looks as if it was designed to support eSATA but they blanked off the port. The On/Off switch is a nasty looking, small cheap slider rather than the quality rocker type used for this case. It also reverts to a tray based HDD/SSD mounting design. It does mean that it is more suitable for dual 3.5" and 2.5" HDD/SSD use than the tray-less design this 3.5" only one has. But tray-less is undoubtedly more convenient if you need to replace/remove the HDD. It makes doing that almost as fast as a docking station. Now to the negatives: the cost of this is now questionable. They were already expensive enclosures and what you're doing now is importing a US spec version. That comes with, annoyingly, a fixed US mains plug on the PSU supplied. It is still a universal PSU ie. 100v - 240v but unlike the EU/UK version it does not come with any socket adapters built in or otherwise. It is just a simple US two prong design, apparently non-polarized but I've not tested that. So to the cost of the enclosure you need to add either a replacement UK 12v, identical spec UK PSU or, cheaper, a decent US to UK plug adapter. I've tried both solutions and I'd go with the latter. I bought a pair from desertcart which I'm probably not allowed to link too here but they mount the PSU firmly and as far as I've tested cause no problems. That's it really - still a good piece of kit for your external 3.5" HDDs but the total cost, which will undoubtedly rise for other reasons too, now makes it far less attractive than it once was. With 3.5" HDDs slowly becoming redundant in the face of similar capacity SSDs which can make full use of USB 3.1+ speed capabilities it is a bit of an indulgence.

## Features

- VERSATILE FUNCTIONALITY: This eSATA enclosure for 3.5 in. SATA HDDs is perfect if you need quick and easy access to your data or need to back up, archive, or recover data and multimedia content.
- MAXIMUM COMPATIBILITY: The universal 3.5" SATA hard drive enclosure can be connected through USB 3.0 with transfer speeds up 5Gbps. The HDD enclosure is also compatible with SATA I and II.
- EASY TO USE: The external hard drive enclosure allows you to swap drives in and out as needed with the trayless design. The enclosure has plug-and-play functionality.
- SAVES SPACE: With a sleek, compact style, this trayless hard drive enclosure, occupies minimal space, and features a fanless design that keeps the enclosure quiet so you to focus on whats important.
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076M3ZLKF |
| Are Batteries Included | No |
| Best Sellers Rank | #54,877 in Computers ( See Top 100 in Computers ) #244 in Enclosures |
| Color | Black |
| Compatible devices | Computers, Laptops, and Devices with SATA or USB interface |
| Connectivity technology | USB |
| Customer Reviews | 4.4 4.4 out of 5 stars (122) |
| Data transfer rate | 6 Gigabits Per Second |
| Date First Available | 22 October 2017 |
| Form Factor | 3.5-inch |
| Global Trade Identification Number | 00065030872416 |
| Hard disk form factor | 3.5 Inches |
| Item Weight | 522 g |
| Item model number | S351BMU33ET |
| Item weight | 522 g |
| Manufacturer | Startech.com |
| Material | Metal |
| Max number of supported devices | 1 |
| Memory storage capacity | 3.5 TB |
| Product Dimensions | 21.01 x 13.41 x 3.81 cm; 521.63 g |
| UPC | 065030872416 |
| Voltage | 12 Volts |

## Product Details

- **Brand:** StarTech
- **Colour:** Black
- **Hardware interface:** USB 3.0
- **Hardware platform:** Personal Computer
- **Product dimensions:** 21L x 13.4W x 3.8H centimeters

## Images

![StarTech.com 3.5" External SATA Hard Drive Enclosure - Trayless - eSATA/USB 3.0 (USB 3.1 Gen 1) Hard Drive Enclosure w/UASP (S351BMU33ET) - Image 1](https://m.media-amazon.com/images/I/81aP5WGdSNL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***N on 9 October 2025*

After testing, the digital electronics seem good. It does get hot with high power hard drives (e.g. 7200 RPM drives ) as there is really little thermal connectivity between the drive and the metal outer case as it is basically in a bubble of air. As in another review, there is a place (under the back sticker) to install a 30mm by 10mm thick 12v fan (has fan retention clips, fan holes and, a fan grate), so I installed a Delta fan. Unfortunately, there is no fan header on the enclosure's motherboard, so I hardwired the fan to the motherboard's incoming positive terminal (with a disconnect so you can take the closure completely apart easily) and hardwired (splice) to the power switch wire (switched negative). Temperature dropped way down (50+C --> 35C).

### ⭐⭐⭐⭐⭐ Review
*by M***N on 18 September 2022*

I now have three of these, two in use one for backup and I've been very pleased with their performance. In my practical testing of it I've found the speed difference between eSATA and USB 3.0, the fastest my PC supports, using a SATA III HDD, is minimal. That maybe one of the reasons why Startech decided to discontinue the eSATA support. However their replacement USB 3.1 Gen 2 only enclosure is not in the same class IMHO. The case for that even looks as if it was designed to support eSATA but they blanked off the port. The On/Off switch is a nasty looking, small cheap slider rather than the quality rocker type used for this case. It also reverts to a tray based HDD/SSD mounting design. It does mean that it is more suitable for dual 3.5" and 2.5" HDD/SSD use than the tray-less design this 3.5" only one has. But tray-less is undoubtedly more convenient if you need to replace/remove the HDD. It makes doing that almost as fast as a docking station. Now to the negatives: the cost of this is now questionable. They were already expensive enclosures and what you're doing now is importing a US spec version. That comes with, annoyingly, a fixed US mains plug on the PSU supplied. It is still a universal PSU ie. 100v - 240v but unlike the EU/UK version it does not come with any socket adapters built in or otherwise. It is just a simple US two prong design, apparently non-polarized but I've not tested that. So to the cost of the enclosure you need to add either a replacement UK 12v, identical spec UK PSU or, cheaper, a decent US to UK plug adapter. I've tried both solutions and I'd go with the latter. I bought a pair from Amazon which I'm probably not allowed to link too here but they mount the PSU firmly and as far as I've tested cause no problems. That's it really - still a good piece of kit for your external 3.5" HDDs but the total cost, which will undoubtedly rise for other reasons too, now makes it far less attractive than it once was. With 3.5" HDDs slowly becoming redundant in the face of similar capacity SSDs which can make full use of USB 3.1+ speed capabilities it is a bit of an indulgence.

### ⭐⭐⭐⭐⭐ Review
*by L***C on 7 July 2023*

This case is very well designed, and also very well supported. The most important thing about it, for me at least, is the lack of forced power off. That is, unlike most of the other cases I've tried, it DOES NOT force powerdown/spindown at arbitrary, undocumented, and unconfigurable intervals. This means that one can configure the drive (if desired) to power down or spin down when *IT* is ready. This permits self-tests and internal HDD management features to run to completion, unlike other cheaper cases which just cancel such things while they are in progress. Also notable is that, when one (of the many I've purchased) of these cases had a minor packaging problem, the manufacturer sent me an entirely new case since they didn't have the exact part in stock at the time. I don't anticipate using any other style of case.

## Frequently Bought Together

- StarTech.com 3.5" External SATA Hard Drive Enclosure - Trayless - eSATA / USB 3.0 (USB 3.1 Gen 1) Hard Drive Enclosure w/ UASP , TAA (S351BMU33ET)
- StarTech.com Shielded External eSATA Cable - eSATA cable - Serial ATA 150 - eSATA (M) to eSATA (M) (3 ft) - black (ESATA3)
- StarTech.com 18in 1 Port SATA to eSATA Plate Adapter - External SATA Plate - 6Gbps eSATA Port - Internal SATA to eSATA Adapter - 18 inch (ESATAPLT18IN)

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-03-10*