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USB 3.0/eSATA Dual 3.5” SATA III Hard Drive External RAID Enclosure w/ UASP and Fan – Black

Product ID: S3520BU33ER

Create an external dual 3.5in HDD SATA RAID array, connected through either USB 3.0 with UASP or eSATA

Features
  • UASP Support (Attached SCSI Protocol Specification Revision 1.0)

  • eSATA or USB Host Connection

  • Compatible with SATA revision I/II/III (1.5/3.0/6.0 Gbps)

More Features . . .
  • Hardware RAID

  • Plug-and-Play Compatible

  • Dual Drive Bay

  • Built-in Fan

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Available in
$118.99 USD

ID: S3520BU33ER

In stock: ?
USA: 324  |  Canada: 14
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The S3520BU33ER 2-Bay RAID Enclosure offers a high-performance external storage solution, enabling you to build a secure RAID array with two 3.5” SATA hard drives, with the option to connect it to your computer through either an available USB 3.0 or eSATA port.

For fast data transfers and efficient performance from your SATA III drives, the RAID enclosure supports full SATA III transfer speeds (up to 6 Gbps), as well as full USB 3.0 transfer speeds (up to 5Gbps). When connected through USB, the enclosure supports UASP, which offers performance up to 70% faster than conventional USB 3.0 when paired with a UASP-enabled host controller (see our performance below).

With support for JBOD, Spanning, RAID 0, and RAID 1,the enclosure offers several options that enable you to customize your drive arrangement based on your storage requirements. 

To maximize both durability and reliability, the external RAID enclosure features high-quality aluminum construction with a built-in fan that helps improve ventilation and maintain a better operating environment for your drives.

The HDD enclosure offers a versatile solution for increasing the storage/backup capabilities of your computer, with support for large capacity hard drives (tested up to 4TB). 

To ensure compatibility with your computer system, the S3520BU33ER supports all of the leading operating systems, including: 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™.

It is backed by a StarTech.com 2-year warranty and free lifetime technical support.

Improved Performance with UASP

UASP is supported in Windows 8, Mac OSX (10.8 or above), and Linux. In testing UASP performs with a 70% faster read speed and 40% faster write speed over traditional USB 3.0 at peak performance.

UASP Speed Diagram

At the same peak in testing UASP also shows an 80% reduction in required processor resources.

UASP Speed Diagram

Testing results were obtained using an Intel® Ivy Bridge system, a UASP enabled StarTech.com Enclosure, and a SATA III solid state drive.

The StarTech.com Advantage
  • Versatile connectivity options, through either USB or eSATA
  • Time-saving file transfers, up to 70% faster than traditional USB 3.0 when used with a UASP-supported host
  • Achieve greater drive capacity or secure data redundancy with multiple RAID modes
  • Maximize performance, with file transfer speeds up to 6Gbps using SATA III
Common Customer Questions

View FAQs...

Supports any operating system.
No additional drivers or software required.

Applications
  • Business applications that require external RAID storage for data redundancy
  • Video editing or photography professional/enthusiasts working with very large file sizes
  • Transfer large files between computers quickly and securely without a network
  • Scenarios requiring easy storage transferability between different computer systems and large volume external storage for backups/archiving
Product Numbers
Warranty Information
Warranty 2 Years
Hardware
Chipset ID JM562
Compatible Drive Types (Type and Rate) SATA
Drive Installation Fixed
Drive Size 3.5in
Fan Bearing Type Ball Bearing
Fan(s) Yes
Fans 1 - 80 mm
Interface eSATA
USB 3.0
Number of Drives 2
Number of internal 3.5 inch bays 2
Performance
Hot Swap Capability Yes
Max Drive Capacity Currently tested with up to 4TB 7200 RPM hard drive
Port Multiplier Yes
RAID Yes
Supported RAID Modes BIG (Spanning or Concatenation)
JBOD - (Just a Bunch of Disks)
RAID 0 (Striped Disks)
RAID 1 (Mirrored Disks)
Type and Rate USB 3.0 - 5 Gbit/s
SATA III (6 Gbps)
UASP Support Yes
Connector(s)
Drive Connectors SATA Data & Power Combo (7+15 pin) Receptacle
Host Connectors eSATA (7 pin; Data) Female
USB Type-B (9 pin) USB 3.0 Female
Software
Microsoft WHQL Certified Yes
OS Compatibility OS independent; No software or drivers required
Indicators
LED Indicators 1 - Enclosure Power LED
1 - Drive 1 Activity LED
1 - Drive 2 Activity LED
Power
Center Tip Polarity Positive
Input Voltage 100 ~ 240 AC
Output Current 3 A
Output Voltage 12 DC
Plug Type M
Power Source AC Adapter Included
Environmental
Humidity 20%RH ~ 80%RH
Operating Temperature 5°C to 35°C (41°F to 95°F)
Storage Temperature -20°C to 50°C (-4°F to 122°F)
Physical Characteristics
Color Black
Enclosure Type Aluminum and Plastic
Product Height 3.3 in [85 mm]
Product Length 6.9 in [176 mm]
Product Weight 21.9 oz [620 g]
Product Width 4.4 in [113 mm]
Packaging Information
Shipping (Package) Weight 47.8 oz [1355 g]
What's in the Box
Included in Package 1 - USB 3.0/eSATA HDD RAID Enclosure
1 - eSATA Cable
1 - USB 3.0 Cable
1 - Universal Power Adapter (NA/EU/UK) or AU in Australia
1 - Rubber foot set
1 - Instruction Manual
Certifications
USB 3.0 / eSATA 4-Bay 3.5in SATA III Hard Drive Enclosure w/ built-in HDD Fan & UASP – SATA 6Gbps
S3540BU33E

USB 3.0 / eSATA 4-Bay 3.5in SATA III Hard Drive Enclosure w/ built-in HDD Fan & UASP – SATA 6Gbps

Add four 3.5" SATA III hard drives to your computer externally through USB 3.0 with UASP or eSATA

$215.99

In stock:   USA: 454  |  Canada: 68

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

USB 3.0 eSATA Dual 3.5” SATA III Hard Drive External RAID Enclosure w/ UASP and Fan – White
S3520WU33ER

USB 3.0 eSATA Dual 3.5” SATA III Hard Drive External RAID Enclosure w/ UASP and Fan – White

Create an external dual 3.5in HDD SATA RAID array, connected through either USB 3.0 with UASP or eSATA

$97.99

In stock:   USA: 437  |  Canada: 9

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

1U Rackmount 4-Bay 3.5” SATA / SAS External Hard Drive Enclosure w/ SATA 6 Gbps
SAT35401U

1U Rackmount 4-Bay 3.5” SATA / SAS External Hard Drive Enclosure w/ SATA 6 Gbps

Turn four 3.5” SATA/SAS drives into a 1U rack-mountable storage solution with external Mini SAS connectivity

$368.99

In stock:   USA: 63  |  Canada: 23

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

SATA Cables (1)

2 Port SATA to eSATA Plate Adapter - F/M
ESATAPLT2M

2 Port SATA to eSATA Plate Adapter - F/M

Add two eSATA ports to your PC, extended from internal Serial ATA connection ports

$8.99

In stock:   USA: 191  |  Canada: 7

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

eSATA Cables (3)

Shielded eSATA Cable - M/M
ESATA6

6 ft Shielded External eSATA Cable M/M

Connect your external SATA storage devices to your Laptop or desktop.

$14.99

In stock:   USA: 6166  |  Canada: 183

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

6 ft Shielded eSATA to SATA Cable
SATA2ESATA6

6 ft Shielded eSATA to SATA Cable

Connect eSata devices to a standard SATA port

$14.99

In stock:   USA: 213  |  Canada: 11

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

1 Port SATA to eSATA Slot Plate Bracket

$8.99

In stock:   USA: 1525  |  Canada: 107

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

USB 3.0 Cables (11)

1m (3ft) Certified SuperSpeed USB 3.0 A to B Cable - M/M
USB3CAB1M

1m (3ft) Certified SuperSpeed USB 3.0 A to B Cable - M/M

Connect your USB 3.0 devices with this high-quality USB 3.0 certified cable

$13.99

In stock:   USA: 804  |  Canada: 0
2m (6 ft) Certified SuperSpeed USB 3.0 A to B Cable - M/M
USB3CAB2M

2m (6 ft) Certified SuperSpeed USB 3.0 A to B Cable - M/M

Connect your USB 3.0 devices, with this high-quality USB 3.0 certified cable

$17.99

In stock:   USA: 74  |  Canada: 0
SuperSpeed USB 3.0 Cable A to B - M/M
USB3SAB1

1 ft SuperSpeed USB 3.0 Cable A to B - M/M

Connect to your external solutions and transfer data at 10x the speed of USB 2.0

$9.99

In stock:   USA: 11  |  Canada: 71

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

SuperSpeed USB 3.0 Cable A to B - M/M
USB3SAB10

10 ft SuperSpeed USB 3.0 Cable A to B - M/M

Connect to your external devices and transfer data at 10x the speed of USB 2.0

$16.99

In stock:   USA: 25  |  Canada: 0
1m Black SuperSpeed USB 3.0 Cable - Right Angle A to B - M/M
USB3SAB1MRA

1m Black SuperSpeed USB 3.0 Cable - Right Angle A to B - M/M

Connect USB 3.0 devices, even in hard to reach areas and tight spaces

$11.99

In stock:   USA: 163  |  Canada: 0
2m Black SuperSpeed USB 3.0 Cable - Right Angle A to B - M/M
USB3SAB2MRA

2m Black SuperSpeed USB 3.0 Cable - Right Angle A to B - M/M

Connect USB 3.0 devices, even in hard to reach areas and tight spaces

$6.99

In stock:   USA: 777  |  Canada: 8

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

SuperSpeed USB 3.0 Cable A to B - M/M

$9.99

In stock:   USA: 407  |  Canada: 9

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

SuperSpeed USB 3.0 Cable A to B - M/M (Black)
USB3SAB3BK

3 ft Black SuperSpeed USB 3.0 Cable A to B - M/M

Connect to your external solutions and transfer data at 10x the speed of USB 2.0

$9.99

In stock:   USA: 78  |  Canada: 5

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

3m Black SuperSpeed USB 3.0 Cable - Right Angle A to B - M/M
USB3SAB3MRA

3m Black SuperSpeed USB 3.0 Cable - Right Angle A to B - M/M

Connect USB 3.0 devices, even in hard to reach areas and tight spaces

$15.99

In stock:   USA: 202  |  Canada: 122

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

SuperSpeed USB 3.0 Cable A to B - M/M
USB3SAB6

6 ft SuperSpeed USB 3.0 Cable A to B - M/M

Connect to your external solutions and transfer data at 10x the speed of USB 2.0

$11.99

In stock:   USA: 296  |  Canada: 29

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

SuperSpeed USB 3.0 Cable A to B - M/M (Black)
USB3SAB6BK

6 ft Black SuperSpeed USB 3.0 Cable A to B - M/M

Connect to your external solutions and transfer data at 10x the speed of USB 2.0

USB 3.0 Cards (3)

2 Port PCI Express SuperSpeed USB 3.0 Card Adapter with UASP Support
PEXUSB3S2

2 Port PCI Express SuperSpeed USB 3.0 Card Adapter with UASP Support

Add 2 USB 3.0 ports to your desktop computer through a PCI Express expansion slot

$46.99

In stock:   USA: 12  |  Canada: 18

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

4 Port SuperSpeed USB 3.0 PCI Express Card with UASP - SATA Power
PEXUSB3S4

4 Port SuperSpeed USB 3.0 PCI Express Card with UASP - SATA Power

Add 4 USB 3.0 ports to your desktop computer through a PCI Express expansion slot

$52.99

In stock:   USA: 1  |  Canada: 1

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

4 Port PCI Express PCIe SuperSpeed USB 3.0 Controller Card Adapter with UASP -  SATA Power
PEXUSB3S4V

4 Port PCI Express PCIe SuperSpeed USB 3.0 Controller Card Adapter with UASP - SATA Power

Add 4 external USB 3.0 ports to a low profile or standard computer, through PCI Express

$58.99

In stock:   USA: 704  |  Canada: 37

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

SATA Controller Cards (4)

2 Port SATA 6 Gbps ExpressCard eSATA Controller Card
ECESAT32

2 Port SATA 6 Gbps ExpressCard eSATA Controller Card

Add Two External SATA 3.0 (6Gbps) Ports to a Laptop, for High Speed Access to Large External Storage Solutions

$64.99

In stock:   USA: 31  |  Canada: 7

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

2 Port SATA 6 Gbps PCI Express eSATA Controller Card
PEXESAT32

2 Port SATA 6 Gbps PCI Express eSATA Controller Card

Add Two eSATA 3.0 (6Gbps) Ports for High Speed Access to Large External Storage Solutions

$44.99

In stock:   USA: 388  |  Canada: 17

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

2 Port PCI Express SATA 6 Gbps eSATA Controller Card - Dual Port PCIe SATA III Card - 2 Int/2 Ext
PEXESAT322I

2 Port PCI Express SATA 6 Gbps eSATA Controller Card - Dual Port PCIe SATA III Card - 2 Int/2 Ext

Add 2 external or internal SATA 6 Gbps ports to a computer, through a PCI Express slot

$53.99

In stock:   USA: 637  |  Canada: 14

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

1x eSATA + 1x SATA 6 Gbps PCI Express SATA Controller Card Adapter
PEXSAT31E1

1x eSATA + 1x SATA 6 Gbps PCI Express SATA Controller Card Adapter

Add external and internal 6 Gbps SATA 3.0 ports for high speed storage access

$44.99

In stock:   USA: 36  |  Canada: 0
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Startech.com - USB 3.0/eSATA Dual 3.5” SATA III Hard Drive External RAID Enclosure w/ UASP and Fan – Black

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