USB 3.1 Dual 3.5” SATA (6Gbps) HDD Enclosure with RAID - USB-C and USB-A
Create high performance external storage with a dual SATA HDD RAID array, through USB 3.1 (10Gbps)
Product ID: S352BU313R
This USB 3.1 dual-bay drive enclosure makes it easy to add high-capacity, high-performance external data storage to your laptop or desktop computer. The dual-bay RAID enclosure supports two 3.5” SATA hard drives with ultra-fast data transfer speeds and configurable RAID modes.
High-speed, high-capacity data storage
Create a high-capacity, external data storage solution with support for two 3.5” HDDs, SSDs or SSHDs. This 2-bay 3.5" drive enclosure delivers fast file transfer rates up to 10Gbps with USB 3.1 Gen 2 performance. It supports SATA I, II and III and is enhanced with UASP to maximize the performance and speed of your SATA III drives.
The dual-drive RAID enclosure provides an effective solution for creative professionals, office employees, researchers, and medical personnel to store, access, back up, and protect important files. It gives you the peace of mind of knowing that your data is safe, secure, and protected.
Increase performance and data redundancy through RAID
With multiple RAID options, you can gain increased storage size, performance, or redundancy. The enclosure supports RAID 0, RAID 1, JBOD and SPAN (BIG), which enables you to choose your preferred backup mode and customize your drive arrangement based on your storage requirements.
Designed for reliability and versatility
To maximize both durability and reliability, the external RAID enclosure features an aluminum and plastic housing with a metal hard-drive mounting tray. It also features a built-in fan, to help dissipate operating heat and maintain an optimum operating environment for drive protection.
The dual-bay drive enclosure includes both a USB-C and USB-A cable for flexible use with the latest laptops and tablets, equipped with a USB-C™ port, Thunderbolt™ 3 USB-C port, as well as legacy devices. The enclosure is OS independent, requiring no additional software or drivers.
The S352BU313R is backed by a StarTech.com 2-year warranty and free lifetime technical support.
Ideal for small business or home offices, build an external RAID array for data redundancy, to protect against drive failure when working with important data
Video editing or photography professionals/enthusiasts can securely work with very large files
Transfer large files between computers quickly and securely without a network
Easy storage transfers between different computer systems and large volume external storage for backups/archiving
|Bus Type||USB 3.1 Gen 2|
|Chipset ID||ASMedia - ASM1352R|
|Compatible Drive Types||SATA|
|Fan Bearing Type||Sleeve Bearing|
|Fans||1 - 50 mm|
|Interface||USB 3.1 Gen 2|
|Number of Drives||2|
|Max Drive Capacity||Tested up to 10TB|
|Maximum Data Transfer Rate||10 Gbps|
|Supported RAID Modes||RAID 0 (Striped Disks)|
|RAID 1 (Mirrored Disks)|
|JBOD - (Just a Bunch of Disks)|
|BIG (Spanning or Concatenation)|
|Type and Rate||USB 3.1 Gen 2 - 10 Gbit/s|
|SATA III (6 Gbps)|
|Drive Connectors||2 - SATA Data & Power Combo (7+15 pin)|
|Host Connectors||1 - USB 3.1 USB Type-B (9 pin, Gen 2, 10 Gbps)|
|OS Compatibility||OS independent; No software or drivers required|
|LED Indicators||1 - Power|
|2 - Drive Activity|
|Center Tip Polarity||Positive|
|Input Voltage||100 ~ 240 AC|
|Output Voltage||12 DC|
|Power Consumption (In Watts)||36W|
|Power Source||AC Adapter Included|
|Operating Temperature||0°C to 40°C (32°F to 104°F)|
|Storage Temperature||-10°C to 65°C (14°F to 149°F)|
|Enclosure Type||Aluminum and Plastic|
|Product Height||125 mm [4.9 in]|
|Product Length||190 mm [7.5 in]|
|Product Weight||1 kg [2.2 lb]|
|Product Width||75 mm [3 in]|
|Shipping (Package) Weight||1.8 kg [3.9 lb]|
|What's in the Box|
|Included in Package||1 - dual-bay enclosure|
|1 - universal power adapter (NA/JP, UK, EU, ANZ)|
|1 - USB-A to USB-B cable|
|1 - USB-C to USB-B cable|
|1 - enclosure stand|
|8 - drive screws|
|1 - quick-start guide|
The high-speed, high-capacity data storage solution you’ve been waiting for – with USB 3.1 Gen 2
Turn your mSATA or mSATA Mini drive into a portable, high performance storage solution over USB 3.1 Gen 2
Turn your M.2 SATA drive into an ultra-fast, ultra-portable storage solution for USB-C enabled devices
Turn two 2.5" SATA SSDs or HDDs into high-performance storage with RAID - for USB-C and USB-A enabled devices
Get ready for ultra-fast USB 3.1 Gen 2 data storage using your 2.5” SSD or HDD
Add fast and portable data storage to your USB Type-C enabled MacBook, Chromebook Pixel, or laptop
Create a fast and portable data storage solution for your USB Type-C enabled laptop
Get the faster speed of USB 3.1 Gen 2 in a lightweight and portable storage solution
Access data stored on your 2.5” SATA SSD/HDD, with support for high-capacity drives up to 15mm
Quickly access and back up the data from your USB-C or USB-A enabled device, through ultra-fast USB 3.1 Gen 2
Turn two M.2 SATA drives into ultra-fast, portable storage with RAID for increased performance or redundancy
Add four 3.5" SATA III hard drives to your computer externally through USB 3.0 with UASP or eSATA
Turn four 3.5” SATA/SAS drives into a 1U rack-mountable storage solution with external Mini SAS connectivity
Create an external dual 3.5in HDD SATA RAID array, connected through either USB 3.0 with UASP or eSATA
Connect two 3.5" SATA III hard drives to your computer through USB 3.0 with UASP in a RAID array, and charge or connect USB devices with the built-in 2-port USB 3.0 fast charge hub
USB 3.0 / eSATA Dual-Bay Trayless 3.5 SATA III Hard Drive Enclosure with UASP – 2-Bay SATA 6 Gbps HDD Enclosure
Connect two hot-swappable 3.5" SATA III hard drives to your computer externally through USB 3.0 with UASP or eSATA
Connect your USB 3.0 devices with this high-quality USB 3.0 certified cable
Connect to your external solutions and transfer data at 10x the speed of USB 2.0
Connect to your external devices and transfer data at 10x the speed of USB 2.0
Connect USB 3.0 devices, even in hard to reach areas and tight spaces
Connect to your external solutions and transfer data at 10x the speed of USB 2.0
Connect USB 3.1 or 3.0 USB-B devices to your USB-C tablet or laptop or computer
Add an external USB Type-C and two external USB Type-A ports to your computer, plus an IDC header port that can provide two internal USB 3.0 ports
Frequently Asked Questions
Before You Buy
To determine if your hard drive will work in this enclosure, on the product page, click the Technical Specifications tab, and do the following:
- Make sure that the enclosure supports the storage size of your hard drive. If the storage size of your hard drive is larger than what the enclosure was tested with, the hard drive will likely still work with the enclosure.
- Confirm that your hard drive uses the same interface type as the enclosure. For example, IDE, SATA, or M.2.
- Make sure that the enclosure supports the physical size of your hard drive, such as 2.5 inches or 3.5 inches.
- Make sure that the enclosure supports the height of your hard drive. For example, 9 mm or 15 mm.
- Verify that the power consumption of your hard drive doesn’t exceed the power output of the enclosure. If you’re using multiple hard drives, make sure that the combined power consumption of all of the hard drives doesn’t exceed the power output of the enclosure.
Note: Not all StarTech.com devices support each of the RAID modes described below. For more information on the RAID modes that your device supports, refer to the manual or the StarTech.com product page.
Redundant Array of Independent Disks (RAID) is a virtual disk technology that combines multiple physical drives into one unit. RAID can create redundancy, improve performance, or do both.
RAID should not be considered a replacement for backing up your data. If critical data is going onto a RAID array, it should be backed up to another physical drive or logical set of drives.
The following are terms that are normally used in connection with RAID:
- Striping: data is split between multiple disks.
- Mirroring: data is mirrored between multiple disks.
- Parity: also referred to as a checksum. Parity is a calculated value used to mathematically rebuild data.
Different RAID levels exist for different application requirements.
Refer to the following table for the list of RAID modes offered by some StarTech.com products:
|RAID 0||Striped disks||Data is split evenly between two or more disks.||Large size and the fastest speed.||No redundancy.||If one or more drives fails, this results in array failure.|
|RAID 1||Mirrored disks||Two or more drives have identical data on them.||A single drive failure will not result in data loss.||Speed and size is limited by the slowest and smallest disk.||Only one drive is needed for recovery.|
|RAID 3||Striped set with dedicated parity||Data is split evenly between two or more disks, plus a dedicated drive for parity storage.||High speeds for sequential read/write operations.||Poor performance for multiple simultaneous instructions.||A single drive failure will rebuild.|
|RAID 5||Striped disks with distributed parity||Data is split evenly between three or more disks. Parity is split between disks.||Large size, fast speed, and redundancy.||The total array size is reduced by parity.||A single drive failure will rebuild.|
|RAID 10||1+0; Striped set of Mirrored Subset||Four or more drives are made into two mirrors that are striped.||Larger size and higher speed than RAID-1, and more redundancy than RAID-0.||No parity.||Only one drive in a mirrored set can fail.|
|JBOD||Just a Bunch Of Disks||Any number of drives are accessed independently by the operating system.||Software RAID modes can be used.||Hardware RAID may have better performance.||N/A|
|Big||Spanning or Concatenation||Data is written on one drive until it is full, and then the next drive(s) until it or they are full.||Creates a very large and simple array.||
|Clone||RAID 1 + Spare||
Two drives have identical data, plus one drive is used for rebuilding in case of a primary array failure.
|Seamless operation when one drive fails in a RAID-1 array.||Spare drive is not accessible to the user.||Only one drive is needed for recovery.|
USB 3.1 is the most recent version of the USB (Universal Serial Bus) standard for connecting computers and electronic devices. It is capable of data transfer speeds up to 10Gbps, and while it can use the USB-C connector type, it can also use a variety of other connector types. To achieve USB 3.1 transfer speeds, your USB host connection, cables, and device must all support USB 3.1. USB 3.1 is also known as USB 3.1 Gen 2 (10Gbps).
USB 3.0 is capable of data transfer speeds up to 5Gbps. USB 3.0 is also known as USB 3.1 Gen 1 (5Gbps).
USB 3.1 is backwards compatible with USB 3.0 and USB 2.0, except in the following scenarios:
- USB-B 3.1 cables are not compatible with USB-B 2.0 ports.
- Unless you use an adapter, USB-C ports or cables will not work with USB-A or USB-B ports or cables.
- Devices that require USB 3.1 transfer speeds of 10Gbps might not work with USB 3.0 or USB 2.0, or you might experience lower transfer speeds and impacted performance.
- Bus-powered USB devices that requires more power than what USB 2.0 can provide are not compatible with USB 2.0.
To transfer data at speeds of 10Gbps, you need to confirm that the following components in your setup support USB 3.1:
- The USB host connection
- The USB cable
- The USB device and any subcomponents (for example, a hard drive docking station and the hard drives in the docking station)
Note: USB 3.1 is also known as USB 3.1 Gen 2 (10Gbps). Devices that support USB 3.1 should have the USB 3.1 symbol on them. If the USB 3.1 symbol does not appear on your USB source or device, refer to the information provided by the manufacturer to confirm whether the USB source or device support USB 3.1.
The included USB cable for this USB 3.1 Gen 2 device has been tested and verified to perform at USB 3.1 Gen 2 speeds of 10Gbps.
Compliance and Safety
- If product has an exposed circuit board, do not touch the product under power.
- If Class 1 Laser Product. Laser radiation is present when the system is open.
- Wiring terminations should not be made with the product and/or electric lines under power.
- Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
- Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
* Product appearance and specifications are subject to change without notice.