StarTech USB 3.0/eSATA Dual-Bay Trayless 3.5" SATA III Hard Drive Enclosure
StarTech USB 3.0/eSATA Dual-Bay Trayless...: Picture 1 thumbnail
StarTech USB 3.0/eSATA Dual-Bay Trayless...: Picture 2 thumbnail
StarTech USB 3.0/eSATA Dual-Bay Trayless...: Picture 3 thumbnail
StarTech USB 3.0/eSATA Dual-Bay Trayless...: Picture 4 thumbnail
See all StarTech items

StarTech USB 3.0/eSATA Dual-Bay Trayless 3.5" SATA III Hard Drive Enclosure with UASP, RAID 0/1/JBOD Support, 6Gbps Maximum Data Transfer Rate

SKU: STS352BU33RE MFR: S352BU33RER
(5)1 question, 4 answers
$154.99
Earn VIP Reward Points

Key Features

  • Experience fast data transfers with this enclosure's 6 Gbps SATA III and UASP support.
  • Utilize RAID 0/1/JBOD modes for versatile storage configurations and data redundancy.
  • Enjoy broad compatibility with Windows, Mac, Linux, and Chrome OS operating systems.
  • Install and swap 3.5" SATA drives easily with the convenient trayless design.
  • Safeguard your data with key lock feature, preventing unauthorized drive access.
  • Expand your storage capacity; supports up to 8TB (4TB per bay) for large projects.
See More Product Details
Temporarily On Backorder?Expected Availability: 10/2025Request assistance or get notified
Free Shipping

See Options

1
Add to ListGet Sale Alert

Protect your gear with Adorama Protect.* Learn more

1 Year

$14.99

2 Year

$24.99

3 Year

$34.99

Available to U.S. customers only.

Need help? Ask our experts.

Overview
Compare
Specs
Protection
Q&A

Questions & Answers

Reviews about this item

Review Summary

2021-06-09T20:00:00

Rated 1 out of 5

Promising but a failure.

I bought this to use for backup of my PC. First oddity I noticed is that if you turn it on and the USB cable isn't plugged into a computer, the unit will shut off within a couple seconds. This seems rough on the hard drives. I tried "stripping" mode to combine two disks so I could get more storage space. Within a day, the "rebuild" LED turned on (even after redoing the setup process a few times) and the volume was inaccessible. This was unreliable so I decided to use the device differently. I decided to use it to copy some important data off of a couple drives at the same time (in "standard" mode). These were different drives (6 TB and 2 TB) that I had for a couple years to store important data. I copied from these drives off and on over a few days; it worked well. Then, Windows 10 decided to reboot for an update (I thought I disabled this!). When it came back on, 6 TB total of data was lost. "The file system is corrupt". This was my first and last experience with StarTech. What a depressing failure. 8 TB of data, GONE! Thanks.

Quin

2021-05-16T20:00:00

Rated 5 out of 5

Works with 16TB!!!! Yay!

I had 2 spare 16TB Iron Wolf Drives and needed a RAID 1 enclosure. This one did not advertise a 16TB compatibility. But, after hooking directly to the USB 3.0 Port (no hub) and letting the RAID Mode finish it's config, the Device showed up and away I went into Backup Heaven!

Gordward

2020-01-02T19:00:00

Rated 3 out of 5

Awesome Minus Cheap Fan

This enclosure has been solid for quite some time. Probably just outside of the warranty period. Everything was great until the fan started making noise randomly. It is not easy to replace unless you have tiny hands.

CPUaffinity

2018-12-26T19:00:00

Rated 2 out of 5

rigid case but has areas for improvement

after around a year or two of constant work as a server raid datastorage the fan stopped working. Replacing it is possible but plug is a bit hard to reach. The documentation, especially for the LED signals should be dramatically improved - some forums are better information sources than the official manual. Something I am currently struggling with and I can't find any info about, is if this enclosure is compatible with 4Kn drives - I have put two 6TB 4Kn (HGST) drives in now and did some tries but do not have the feeling it works (attached via eSATA or USB to a Ryzen 7 system on win10). One LED is constant blue, one LED is constant purple (=red) for over half an hour now and the PC doesn't detect anything. At some point the discs also slow down. Same situation with only 1 drive plugged in. The HDDs themselves are new and both ok and detected fine when directly attached to the internal SATA ports of the PC. The controller is a JMicron - JMS562 which (bad) documentation is also not mentioning 4Kn support, only Win8 compatibility is assured which would speak pro 4Kn, but I fear this is not the case. The enclosure itself is rigid and easy to use. the eSATA cable could be fixed a bit better, but it's ok. the probably missing 4Kn support and the bad LED documentation as well as the broken fan however make me rate it with 2-3 stars max. Oh, and I also lost the raid 1 one or two times with the old disks and was glad I had some backups...

doomi

2017-01-31T19:00:00

Rated 4 out of 5

Works good with some tweaking.

I had it for 4 months. I wanted a Raid0 for my games. Tried the 3.0. USB cable and it initialized great but I lost my raid after a couple of days. Also, I had to connect and disconnect everytime my laptop when to sleep or idle for too long. I tried disabling all USB sleep times and nothing. I kept losing my Raid0 after a while. Then I got a brainstorm and decided to use the eSATA to USB that I bought with it which I did not think I need it. I connected the eSATA side to the enclosure and the USB directly to the laptop bypassing all HUBS. WORKED GREAT. It has been three months now and my Raid0 is intact half way full with games and works super fast and my games have no lag whatsoever. the only thing I dont like is this humming sound it makes when it turning on or off. It makes me feel like is about to fail. Is not my drives is the enclosure making that weird, old sound humming. Other that that, it has been working great with the eSATA to USB cable.

Locotin

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Failure Protection

Failure Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500

Browse our FAQ

See Terms & Conditions

StarTech USB 3.0/eSATA Dual-Bay Trayless 3.5" SATA III Hard Drive Enclosure Specifications

  • Interface

    USB 3.0 & eSATA

  • Bus Type

    USB 3.0

  • Key Lock

    Yes

  • Number of Drives

    2

  • Drive Size

    3.5" / 88.9mm

  • Compatible Drive Types (Type and Rate)

    SATA

  • Drive Installation

    Removable

  • Number of internal 3.5 inch bays

    2

  • Chipset ID

    Jmicron - JM562

  • Drive Connectors

    2x SATA Data & Power Combo (7+15 pin) Receptacle

  • Host Connectors

    USB 3.0 B (9 pin; SuperSpeed) Female
    eSATA (7 pin; Data) Female

  • Maximum Data Transfer Rate

    6 Gbps

  • Type and Rate

    USB 3.0 - 5 Gbit/s
    SATA III (6 Gbps)

  • UASP Support

    Yes

  • Port Multiplier

    Yes

  • RAID

    Yes

  • Max Drive Capacity

    Currently tested with up to 4TB 7200 RPM 3.5" hard drives per bay (8TB total) and 2TB 5900 RPM 2.5" hard drives (2TB total)

  • Hot Swap Capability

    Yes

  • Supported RAID Modes

    BIG (Spanning or Concatenation)
    JBOD - (Just a Bunch of Disks)
    RAID 0 (Striped Disks)
    RAID 1 (Mirrored Disks)

  • OS Compatibility

    Windows 8/8.1 (32/64bit), 7 (32/64bit), Server 2008 (32/64), Vista(32/64), Server 2003 (32/64) XP(32/64), 2000
    Apple Mavericks (10.9) OSX Mountain Lion (10.8), Lion (10.7), Snow Leopard (10.6)
    Linux
    Google Chrome OS

  • LED Indicators

    HDD 1 Activity
    HDD 2 Activity
    RAID LED

  • Power Source

    AC Adapter Included

  • Input Voltage

    110 - 240 AC

  • Output Voltage

    12 DC

  • Output Current

    3 A

  • Operating Temperature

    5 to 35 deg. C (41 to 95 deg. F)

  • Storage Temperature

    -20 to 50 deg. C (-4 to 122 deg. F)

  • Humidity

    20%RH-80%RH

  • Dimensions (L x W x H)

    8.5 x 5.1 x 4.6" / 215.9 x 129.54 x 116.84mm

  • Weight

    6.3lbs / 2.86kg

  • UPC Code

    065030858175

About StarTech USB 3.0/eSATA Dual-Bay Trayless 3.5" SATA III Hard Drive Enclosure

FEATURED REVIEWS

Works with 16TB!!!! Yay!

By Gordward

I had 2 spare 16TB Iron Wolf Drives and needed a RAID 1 enclosure. This one did not advertise a 16TB compatibility. But, after hooking directly to the USB 3.0 Port (no hub) and letting the RAID Mode finish it's config, the Device showed up and away I went into Backup Heaven!

Find the ultimate solution for your high-capacity storage needs with the StarTech 2-Bay RAID Enclosure, expertly designed to house two 3.5" SATA hard drives. This robust enclosure offers seamless connectivity to your computer system via the latest USB 3.0 or eSATA interfaces. Experience the pinnacle of data transfer efficiency with SATA III support, enabling lightning-fast speeds of up to 6Gbps when utilizing the eSATA connection, perfect for professionals who demand top-tier performance.

The enclosure's versatility extends to its USB 3.0 connection, which boasts compatibility with UASP (USB Attached SCSI Protocol), delivering a performance boost of up to 70% faster than traditional USB 3.0 when used with a UASP-enabled host controller. This feature is particularly beneficial for photographers, videographers, and gamers who require swift and reliable data transfers.

Equipped with a front-mounted hardware RAID controller, the StarTech 2-Bay RAID Enclosure offers a range of configurations including JBOD (Just a Bunch Of Disks), Spanning, RAID 0 (Striping), and RAID 1 (Mirroring). These options provide users with the flexibility to optimize their storage for capacity, speed, or redundancy, ensuring that critical data is always protected and accessible.

The enclosure's innovative trayless design simplifies the process of installing and swapping drives, eliminating the need for tools and saving valuable time. This user-friendly approach makes it a breeze to expand your storage or backup capabilities without the hassle of traditional enclosures.

Compatibility is a cornerstone of this enclosure, supporting a wide array of operating systems such as Microsoft Windows (8/7/Vista/XP/Server 2008/Server 2003), Apple OSX (10.9/10.8/10.7/10.6), Linux, and Google Chrome OS. With UASP support available in Windows 8, Mac OSX (10.8 or above), and Linux, users can be assured of optimal performance across various platforms.

In rigorous testing, the enclosure's UASP support has shown to significantly enhance speed, with a 70% increase in read speed and a 40% increase in write speed over conventional USB 3.0 connections at peak performance. This makes the StarTech 2-Bay RAID Enclosure an ideal choice for those who require a durable, spacious, fast, reliable, and user-friendly storage solution.

Whether you're a creative professional managing large multimedia files, a business ensuring data redundancy, or an enthusiast seeking a fast and efficient gaming setup, this dual-bay hard drive enclosure is engineered to meet your needs, providing a high-performance, flexible, and convenient storage solution.

StarTech USB 3.0/eSATA Dual-Bay Trayless 3.5" SATA III Hard Drive Enclosure Features

  • Supports SATA III (6 Gbps) and UASP (5 Gbps) for optimal performance
  • Trayless removable HDD slots with drive locks
  • Compatible with SATA revision I/II/III (1.5/3.0/6.0 Gbps) drives
  • Compatible with USB 3.0/2.0/1.1 (5 Gbps / 480 Mbps / 1.5 Mbps)
  • Front-mounted RAID controller
  • Versatile connectivity options, through either USB or eSATA
  • Maximize performance, with file transfer speeds up to 6Gbps using eSATA
  • Achieve greater drive capacity or secure data redundancy with a built-in hardware RAID controller
  • Build an external RAID 1 array for data redundancy, to protect against drive failure when working with important data
  • Externally work with very large files securely in video editing or photography applications
  • Quickly transfer large data files from your computer to a secure external RAID enclosure

Warranty Information

This product has a limited warranty of 24 months.

Join VIP PRO

2 Day Delivery on thousands of items!

Sell or Trade your Gear

Get started in 3 easy steps

Key Features

  • Experience fast data transfers with this enclosure's 6 Gbps SATA III and UASP support.
  • Utilize RAID 0/1/JBOD modes for versatile storage configurations and data redundancy.
  • Enjoy broad compatibility with Windows, Mac, Linux, and Chrome OS operating systems.
  • Install and swap 3.5" SATA drives easily with the convenient trayless design.
  • Safeguard your data with key lock feature, preventing unauthorized drive access.
  • Expand your storage capacity; supports up to 8TB (4TB per bay) for large projects.

What's in the box:

  • StarTech USB 3.0/eSATA Dual-Bay Trayless 3.5 " SATA III Hard Drive Enclosure
  • eSATA Cable
  • USB 3.0 Cable
  • 2x Drive Bay Keys
  • Universal Power Adapter
  • Instruction Manual
  • StarTech 2 Year Warranty