USB 3.0/eSATA Dual 3.5 SATA III Hard Drive External RAID Enclosure w/ UASP and Fan – Black (S3520BU33ER)
Dual 3.5in USB 3.0 Hot Swap Trayless SATA Hard Drive Enclosure w/ Fan
Connect Two Removable SATA Hard Drives through a Single USB 3.0 Connection
Product ID: SAT3520U3R
- Trayless design: 3.5in drives are not mounted to a tray or the enclosure chassis/frame
- SuperSpeed USB 3.0 compliant host interface, which supports transfer rates up to 5 Gbps
- RAID support: 0, 1, BIG (Concatenation), JBOD
- Backward compatible with USB 2.0 systems, out of the box
- 55mm cooling fan
- Lockable drive doors
- Power and Activity LED indicators
- Plug-and-Play and Hot-Swap compatible
Support
Overview
The SAT3520U3R USB 3.0 to Dual 3.5-inch SATA Trayless Hard Drive Enclosure makes adding fast external storage easy, by turning any two 3.5-inch internal SATA hard drives into an external hard drive. Large capacity drives (tested with up to 4TB per bay) can be used to greatly enhance your computer's storage/backup capabilities.
The hard drive enclosure features a trayless system that eliminates having to mount and fasten the hard drive into the enclosure or tray, for quick and easy installation or removal.
Using the SuperSpeed USB 3.0 interface, which is up to 10 times faster than the previous USB 2.0, makes backing up and transferring large files faster than ever, while still being usable on older USB 2.0 systems. With built-in RAID capabilities (0, 1, BIG, JBOD), the two drives can be combined for speed, redundancy, capacity, or even left as separate drives, based on situation needs.
The StarTech.com Advantage
- SuperSpeed USB 3.0 technology provides fast access for external storage, while still being backward compatible with USB 2.0
- Quickly and easily install or remove hard drives from the enclosure with the innovative trayless design
- Built-in support for RAID 0, 1, JBOD and Concatenation modes to suite most personal/business needs
Applications
Adding external storage that is easily transferable between different computer systems
Expand the storage capabilities of a small form factor/embedded system or laptop, with an external hard drive
Adding external storage capacity for video editing or photo editing stations, making it easier to work with very large file sizes
Creating additional backup/archive storage for IT professionals
Turning unused SATA hard drives into additional external data storage
Technical Specifications
| Warranty Information | ||
|---|---|---|
| Warranty | 2 Years | |
| Hardware | ||
| Chipset ID | JMicron - JMS551 | |
| Compatible Drive Types | SATA | |
| Drive Installation | Removable | |
| Drive Size | 3.5in | |
| Fan(s) | Yes | |
| Fans | 1 - 55 mm | |
| Interface | USB 3.0 | |
| Number of Drives | 2 | |
| Performance | ||
| Insertion Rating | 15, 000 cycles | |
| Max Drive Capacity | Currently tested with up to 4TB 5400 RPM hard drives per bay (8TB total) | |
| RAID | Yes | |
| Supported RAID Modes | BIG (Spanning or Concatenation) | |
| JBOD - (Just a Bunch of Disks) | ||
| RAID 0 (Striped Disks) | ||
| RAID 1 (Mirrored Disks) | ||
| Temperature Alarm | No | |
| Type and Rate | USB 3.0 - 5 Gbit/s | |
| SATA II (3 Gbps) | ||
| UASP Support | No | |
| Connector(s) | ||
| Drive Connectors | 2 - SATA Data & Power Combo (7+15 pin) Receptacle | |
| Host Connectors | 1 - USB Type-B (9 pin) USB 3.0 Female | |
| Software | ||
| OS Compatibility | OS independent; No software or drivers required | |
| Special Notes / Requirements | ||
| System and Cable Requirements | Available USB port | |
| Indicators | ||
| LED Indicators | 2 - Activity (blue) | |
| 2 - Power (blue) | ||
| Power | ||
| Input Voltage | 110V-240V AC | |
| Output Current | 3A | |
| Output Voltage | 12 DC | |
| Power Source | AC Adapter Included | |
| Environmental | ||
| Humidity | 8% ~ 90% RH | |
| Operating Temperature | 5°C to 80°C (41°F to 176°F) | |
| Storage Temperature | -40°C to 70°C (-40°F to 158°F) | |
| Physical Characteristics | ||
| Color | Black | |
| Enclosure Type | Aluminum and Plastic | |
| Product Height | 135 mm [5.3 in] | |
| Product Length | 210 mm [8.3 in] | |
| Product Weight | 858 g [30.3 oz] | |
| Product Width | 76 mm [3 in] | |
| Packaging Information | ||
| Package Quantity | 1 | |
| Shipping (Package) Weight | 1545 g [54.5 oz] | |
| What's in the Box | ||
| Included in Package | 1 - Hard Drive Enclosure | |
| 1 - USB 3.0 Cable | ||
| 3 - Power Cord (NA/UK/EU) | ||
| 1 - Universal Power Adapter | ||
| 1 - Instruction Manual | ||
No additional drivers or software required.
Certifications
Related Products
USB 3.0 to SATA Hard Drive Docking Station for 2.5/3.5 HDD
Enable fast, swappable access to your 2.5in or 3.5in SATA hard drives, through USB 3.0
Accessories
1 ft (30cm) 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
3 m (10 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
91 cm (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
1,8m (6ft.) 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
2 port PCI Express SuperSpeed USB 3.0 Card with UASP Support - 1 Internal 1 External
Add one internal and one external SuperSpeed USB 3.0 to your PC
2 Port Flush Mount ExpressCard 54mm SuperSpeed USB 3.0 Card Adapter with UASP Support
Add two flushmount USB 3.0 ports to your ExpressCard-enabled laptop
Product Support
Drivers & Downloads
Manual(s):
-
SAT3520U3R.pdf
English
Compliance Letter(s):
Data Sheet(s)
- SAT3520U3R_Datasheet-EN-EU.pdf
English
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 mode | Description | Operation | Advantages | Disadvantages | Recovery |
| 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. |
No redundancy. |
N/A |
| 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. |
