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We recommend OWC Mercury Elite Pro Dual mini bus-powered FW800 & USB 3.0 RAID Storage Enclosure (Mfr P/N: MEMD3F0GB) from Other World Computing for $89.99 as a suitable alternative.

OWC Mercury
Elite Pro Dual mini

0GB Add your own drive enclosure
Bus-Powered, Multi-Interface RAID Storage Enclosure

Mac / PC / USB 2.0 & 1.1 / FireWire 800 / FireWire 400 / eSATA
  • Mac
  • PC
  • eSATA
  • FireWire 800/400
  • USB
High Performance Dual Drive, Bus-Powered Hardware RAID Data Storage/Backup with Plug & Play Convenience
With your choice of two 2.5″ Serial ATA (SATA) hard drives OR Solid State Drives (SSD), the latest Oxford chipset, and USB 2.0/FireWire 800/400/eSATA connectivity, the Mercury Elite Pro Dual mini Portable storage solution delivers up to 300MB/s data transfer speeds for demanding data storage and backup needs. All that performance resides in an impact resistant, bus powered (no AC adapter required), heat dissipating 5.6 in (D) x 6.1 in (W) x 1.1 in (H) brushed aluminum enclosure with near silent, fanless operation.
When you want high style in high performance storage, look no further than the Mercury Elite Pro Dual mini
With your own drive mechanisms built into a shock resistant, portable aluminum enclosure, the Mercury Elite Pro Dual mini is ready to go wherever you need a near silent, compact A/V, Digital Photography, Professional Music, Graphics, General Data, and Time Machine ready Hardware RAID storage solution.
HD Video Certified
This model is pre-configured for RAID-1 but can be user re-configured at any time for RAID-0, Span or Independent. Test Certified for HD Video capture and playback of HDV, DVC Pro, and ProRes 422HQ file formats via eSATA and FireWire 800.

RAID 0 Performance Stripe
Both drives are combined together to create a single drive volume that's much faster and provides larger capacity.

RAID 1 Mirror
Both drives are used to write two "mirrored" copies of your data at the same time to provide an instant backup copy of your data.

NRAID (Span)
Creates a larger drive by combining the capacity of two or more drives of the same or varying sizes into a larger drive volume.

Independent Mode (JBOD)
Available as an option via USB and FireWire connections, this mode lets you access each drive as an independent volume. This mode is like having two separate drives connected to your computer.

Drives not included - uses two 2.5" SATA drives.
Requires two identical model drives for best operation,
operation with non-matched drives is not supported.
2.5" sata hard drive
OWC NOTE: OWC recommends that all drives used in RAID configurations be identical for best performance. This drive enclosure requires two 2.5" Serial ATA (SATA) drive mechanisms. Most computers produced since 2006 use Serial ATA (SATA) hard drives. Please make sure that the drive you wish to use with this enclosure is compatible. If you need an enclosure for an ATA/IDE hard drive, click here. Because the amount of computer bus power provided can vary, use of the optional AC adapter may be required for proper operation of higher power draw mechanical hard drives and solid state drives.


  • Mercury Elite Pro Dual mini Bus-Powered, Multi-Interface Compact Enclosure
  • High Quality Double Shielded eSATA connecting cable
  • High Quality Double Shielded FireWire 800 connecting cable (9-9 Pin cable)
  • High Quality Double Shielded USB 2.0/1.1 connecting cable
  • FireWire 800 to 12 Volt Power Cable (For optimum results when using eSATA data connection)
  • Smart Power switch - in switched on position, unit powers up and down in tandem with computer
  • Mercury Elite Pro Dual mini Assembly Manual (5MB PDF)
  • OWC 1 Year Warranty with 48-Hour Turnaround Time


  • Oxford 946 Chipset
  • Hardware RAID Modes: 0, 1, SPAN or Independent Mode
  • System status LEDs
  • Near silent fanless operation
  • Heat dissipating anodized aluminum enclosure
  • Ultra-protective Shock Isolation System
  • Bus Powered Design through FireWire ports
Note: eSATA connection requires FireWire bus power or external power supply and USB port requires external power supply


Product Specifications:

Drive Type

  • Two matching 2.5″ SATA drives up to 12.5mm

Bridge Chipset

  • Oxford 946 chipset with eSATA, FW400(1394A), FW800(1394B), and USB 2.0

Drive Mechanisms Supported

  • Any two 2.5" SATA hard drive or SSD up to 12.5mm in size.
  • Note: Because the amount of computer bus power provided can vary, use of the optional AC adapter may be required for proper operation of higher power draw mechanical hard drives and solid state drives.

Drive Rotation Speed

  • Dependent on drive mechanism installed

Drive Cache Size

  • Dependent on drive mechanism installed

Maximum Data Transfer Rate

  • eSATA - 3.0Gbps (or 300MB/sec)
  • FireWire 800 - 800Mbps (or 100MB/sec)
  • FireWire 400 - 400Mbps (or 50MB/sec)
  • USB 2.0 - 480Mbps (or 60MB/sec)

Port/Interface Bootability

    Can I use this solution as an external startup drive?
  • eSATA: Supported on Macs and PC's meeting minimum requirements. - Click for more info
  • FireWire 800: Supported on Macs and PC's meeting minimum requirements. - Click for more info
  • FireWire 400: Supported on Macs and PC's meeting minimum requirements. - Click for more info
  • USB 2.0: Supported on Macs and PC's meeting minimum requirements. - Click for more info

Macintosh System Requirements

  • Mac OS 8.6 to 9.2.2 compatible, OS X 10.1.x and later. Including 'Mavericks' 10.9.x (10.2 or later required for FW800 and USB 2.0)
  • eSATA: Macintosh with eSATA interface, either built in or via PCI eSATA card.
  • FireWire 800: Macintosh with FireWire 800 interface, either built in or via PCI FireWire 800 card.
  • USB 2.0: Macintosh with USB 2.0 interface, either built in or via PCI USB 2.0 card.
  • Time Machine® Compatible: Mac OS X 10.5 (version introduced) and later.

Windows System Requirements

  • Windows ME and later.
  • Windows 2000 or later required for FW800 Operation.

Linux Requirements

  • Linux compatible via supported USB and FireWire interfaces.

Selectable RAID Modes*

  • RAID 0 (Stripe)
  • RAID 1 (Mirror)
  • SPAN
  • NRAID Independent Mode (Not available when utilizing eSATA interface)

  • *Unit will arrive pre-configured for RAID 0

Power Supply

  • Bus Power via FireWire 800 supported on all models equipped with an available FireWire 800 port either factory stock or via add on FireWire 800 PCI Card.
  • Optional AC Adapter* (available as a separate purchase here)

  • * AC adapter not required for most applications provided computer bus supplies appropriate power needs.


Enclosure Size

  • 5.6″(D) x 6.1″(W) x 1.1″(H)
  • 14.4 cm x 15.4 cm x 2.8 cm

Enclosure Weight (no accessories)

  • Weighs as little as 1.70 lbs with SSDs, 1.75 lbs with hard drives

Product Manual

Operating Environment:


  • (operating) Up to 0°C - 70°C (32°F - 158°F)
  • (non-operating) Up to -40°C - 85°C (-40°F - 185°F)

Relative Humidity

  • (operating) Up to 5% - 90% RH (Non-condensing)
  • (non-operating) Up to 5% - 95% RH (Non-condensing)


  • Up to 1500G


  • Dependent on drive mechanism installed


  • Dependent on drive mechanism installed


OWC 1 Year Solution Warranty

The best warranty is one you never have to use, but should the need occur - OWC is proud to provide a superior level of support and warranty coverage to our customers. Even when not used, we understand the peace of mind afforded by a longer warranty period. OWC's industry leading coverage is a testament to our confidence in the reliability of the solutions that we offer. OWC solutions are engineered to demanding quality standards in order to deliver the most reliable, highest performance available on the market in each storage category.

View more information about the OWC 1 Year Solution warranty

Manufacturer provided specifications for Other World Computing p/n MEQMH0GBK


Customer Ratings

Write a Review 4.7 / 5 4 out of 4 (100%) reviewers would recommend this product
Reviewer: Anonymous Location: Wyoming Age: 25-34 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 The enclosure works, no problems or work arounds November 3, 2013 I was using two Toshiba Canvio 3.0 750GB Portable USB hard drives with OSX's software mirror RAID to hold my iTunes Library on my 2009 Mini. They worked, but the USB 2.0 interface was slow and the drives were always going to sleep. Every time I tried to access my library on my Apple TV, it would hang the Apple TV and Mini, until both drives had woken back up. I backed up the soft RAID drive to my iMac, and put each drive into the Mercury enclosure, set the RAID option and formatted. I used super duper to restore the data and haven't had an issue since. You know, its kinda nice when the stuff you buy actually does what it is advertised to do. I intend to buy another one for my iPhoto library. The only thing that would make this enclosure better would be USB 3.0; but at this price, its not that important to me.

I would recommend this item to a friend!

Reviewer: Anonymous Location: Sydney Australia Experience Level: Power User Owned Product: 5-6 months
Rating: 5/5 Excellent product June 23, 2013 I am using two of these enclosures connected via eSATA to a LaCie Thunderbolt Hub. One has a pair of 1 TB hard drives in RAID 1 (redundant mirror), and one has a pair of 120GB SSDs in RAID 0 (striped) to form a fast 240GB drive. In eSATA mode each drive needs its own 12V power supply - I used existing supplies I had from older disk drives. OWC helpfully supply a short eSATA cable with each enclosure.

The LaCie hub allows for daisy-chaining another Thunderbolt connection. I use this to drive an Eizo monitor via its DisplayPort input. So, one Thunderbolt cable into the computer and the external drives and display are all connected!

A minor note: while the enclosure can be configured as two single drives, only one is visible to the computer when used with eSATA via the LaCie hub. I believe this is a limitation of the hub, as when connected by Firewire, both drives in the enclosure are visible. At any rate, for use with the LaCie Thunderbolt Hub, the enclosure needs to be set to Spanning, RAID0, or RAID1.

A second minor note: although advertised as "near silent fanless operation", this applies to the enclosure itself. With two hard drives loaded (and spinning), the drives themselves are quite audible in a quiet room.

Summary: an excellent and versatile product indeed. The only "wish" for a future version of this product would be to drop the Firewire 400 port and update the USB port to USB3.0.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: USA Age: 45-54 Experience Level: IT Professional Owned Product: less than a month
Rating: 4/5 Very nice product March 7, 2013 Well constructed and elegant. If daisy-chaining Firewire 400/800 connections, the optional power supply OWCMEP2BAYM15 is highly recommended, especially if more than one bus powered device will be used along the chain.

A minor nit-pick is that the LED cables could be moved so as not to interfere with the drive being seated in one of the bays.

I would recommend this item to a friend!

Verified Buyer
Reviewer: PantherJeep Location: Oceanside, CA Age: 35-44 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 An outstanding eSATA SSD solution October 3, 2012 I am using this enclosure with a pair of OWC Mercury Electra 6G 120GB SSDs in a RAID0 configuration as the boot device for my Early 2008 Mac Pro via eSATA (via the Newer Technology eSATA extender cable adapter, which also serves a Time Machine disk). This enclosure is well-constructed, amazingly fast, and unbelievably easy to set up. There is nothing special or quirky about putting it together - just select a desired disk config, add disks, plug it in, and go. OS X Mountain Lion recognizes it right out of the gate, and installs to and boots from it as if it were a normal internal SATA drive.

The only caveat is that the included FW800-to-Power cable is too short to reach from the rear FW port on the Mac Pro to the top of the case where I put the enclosure. I elected to also purchase the optional AC adapter, but it would be better if a longer cable were included. Overall though, this is an outstanding product and I highly recommend it!

I would recommend this item to a friend!