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4.0TB OWC Mercury Elite Pro Qx2 4Bay RAID External Hard Drive - eSATA/FW800/USB 3.0

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Product code: M3-QX2T-04

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eSATA,FireWire 800+USB 3.0 1U 4-Bay SATA Desktop RAID Solution with selectable RAID 0,1,5,10 Hardware RAID Mode, NRAID Span Options. 3 Year Warranty.

Your price: $984.99

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OWC Mercury Elite Pro Qx2

4.0TB Multi-Interface 4 Bay Professional
Grade Performance RAID Solution

Mac / PC / USB 3.0 & 2.0 / FireWire 800 (FireWire 400 Backwards Compatible) / eSATA
The Ultimate Blend of Professional
Performance and Convenience
The high-capacity, high-performance Mercury Elite Pro Qx2 was engineered for performance-intensive applications such as HD-video, digital photography, professional music, graphics and backup. Choose between five different RAID levels for the best combination of speed, capacity and redundancy for your needs. 

Four 3.5" Serial ATA (SATA I/II) hard disk drives in a brushed aluminum enclosure with Hardware RAID setting flexibility and up to 300MB/s data transfer speed for high performance data storage and redundancy.
User Selectable Hardware RAID Settings
Thanks to a front panel selector switch, the Mercury Elite Pro Qx2 enables easy configuration of the Hardware RAID settings - Span, 0, 1, 5, 10 - so you can select the best combination of speed, capacity, redundancy, or any combination of the three.
Re-builds without a computer connection!
RAID 1, 5, 10 enables you to keep working even if one drive fails!
Combines capacity of two or more drives of the same size without any RAID data distribution scheme into one logical desktop volume. Will also combine the capacity of varying size drives based on the lowest capacity drive in the set.
RAID 0 (Stripe)
Data is split into blocks over two or more drives at same time for high speed and large capacity.
RAID 1 (Mirror)
Data is written at same time to two drives only for highest level of data safety and redundancy.
RAID 5 (Stripe with Parity)
Data is Striped (RAID 0) while incorporating redundancy over three or more drives for the best combination of speed, capacity, and redundancy. The Multi-Interface 4 Bay Enterprise Class Performance RAID Solutions are pre-configured as RAID 5.
RAID 10 (1+0)
Data is Striped (RAID 0) over two Mirrored sets (RAID 1) of drives for fast redundancy.
JBOD/Independent drive operation
Each drive can be operated as an individual volume using the Firewire 800/400 or eSATA connections. This feature is not supported when using the USB connection.













Product Specifications:


  • Micron 355 FW800 (1394B) / FW400 (1394A) and Micron 567 USB 3.0 (2.0/1.1 Backwards compatible)

Interfaces Supported

  • FireWire 800 (1394B) (FireWire 400 Backwards compatible)
  • USB 3.0 (2.0 Backwards compatible)

RAID / JBOD Support

  • RAID 0,1,5,10 Hardware RAID Mode, and NRAID Span Options
  • Solutions are pre-configured as RAID 5 for optimum speed, protection & capacity

Standard Mechanism

  • 4 x 1.0TB* Toshiba/HGST Deskstar™ 7K1000.D Hard Disk Drive**

    *1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences.

    **OWC reserves the right to replace or upgrade to equivalent or better components.

Drive Rotation Speed

  • 7200 RPM

Drive Cache Size

  • 32MB per drive, 128MB total for the solution

Port Configuration

  • eSATA - 1 eSATA port
  • FireWire 800 - (2) 9 pin ports
  • USB 3.0 - (1) 9 pin mini B port


  • Pre-formatted for Mac OSX 

Max Data Transfer Rate

  • eSATA - 300 MB/sec
  • FireWire 800 - 100MB/sec
  • FireWire 400 - 50MB/sec
  • USB 3.0 - 300MB/sec
  • USB 2.0 - 60MB/sec

Port/Interface Bootability

    Mercury Elite Pro Qx2 can be used as an external startup drive.
  • eSATA: Supported on Macs and PC's meeting minimum requirements.
  • FireWire 800: Supported on Macs and PC's meeting minimum requirements. 
  • FireWire 400: Supported on Macs and PC's meeting minimum requirements. 
  • USB 3.0: Supported on Macs and PC's meeting minimum requirements.

Recommended eSATA Cards

eSATA Extender Cables for Mac Pro
PCIe (PCI Express) for Desktops–
OWC tested and qualified for the
OWC Mercury Elite QX2
PCI for Desktops and Towers
ExpressCard/34 for Laptops

Macintosh System Requirements

  • Minimum Apple G4 processor, 128MB RAM
  • Mac OS 8.6 to 9.2.2, 10.0.x or later and an available FireWire 400 port
  • Mac OS X 10.2.8 or later including ‘Lion’ 10.7.x and an available USB 3.0/2.0, FireWire 800*/400 port, or eSATA port
  • Time Machine® Compatible: Mac OS X 10.5 (version introduced) and later.

Windows System Requirements

  • Minimum Intel Pentium III CPU 500MHz, 128MB RAM
  • Windows XP(64 bit) or later and an available USB 3.0/2.0, FireWire 800*/400, or eSATA port.

Linux Requirements

  • Linux compatible via supported USB and FireWire interfaces.

Software Included

  • Intech® Hard Disk SpeedTools Utilities™ OEM (For Mac OS 8.6 – X only)
  • ProSoft Engineering® Data Backup for Mac OS X v10.2.8 or later
  • NovaStor NovaBACKUP® for Windows 2000 or later
  • Over 1.5GB of Freeware, Shareware, Public domain software installed

Power Supply

  • Internal UL Listed U.S./International Auto Switching Power Supply + Australian Plug
  • Protection: OCP, OVP, Short

External Case Dimensions

  • 9.65″(D) x 5.31″(W) x 6.96″(H)
  • 245.11mm x 134.87mm x 176.78mm

Enclosure Weight (no accessories)

  • Approximately 8.6 pounds (3.9kg)

Product Manual


Operating Environment:


  • (operating) 5°C – 55°C (41°F – 131°F)
  • (non-operating) –40°C – 65°C (–40°F – 149°F)

Relative Humidity

  • (operating) 8% - 90% RH (Non-condensing)
  • (non-operating) 5% - 95% RH (Non-condensing)


  • 65G 2mS; (non-operating) 175G 2mS


  • (operating) 1.0G (5 - 300Hz)
  • (non-operating) 5.0G (5 - 500Hz)


OWC 3 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.

Note: Do not disassemble or otherwise open your OWC solution prior to the conclusion of OWC's 3 year Warranty period. Doing so will void the remainder of the OWC warranty.


Manufacturer provided specifications for Other World Computing p/n M3QX2T04.0S UPC#: 794504334456

*The use of FireWire 800 interface while the Qx2 is in RAID 5 setting is not recommended for optimum drive speed performance.


  • Mercury Elite Pro Qx2 Multi-Interface 4-Bay RAID Solution
  • 39" High Quality Double Shielded eSATA connecting cable
  • 36" High Quality Double Shielded FireWire 800 connecting cable (9-9 Pin cable)
  • 36" High Quality Double Shielded USB 3.0/2.0 connecting cable
  • Internal UL Listed U.S./International Auto Switching Power Supply (Australian plug)
  • 2 keys for front panel lock
  • Pre-installed Backup and Utility software
    • Intech® SpeedTools Utilities™ OEM (For Mac OS 8.6 - X only)
    • ProSoft Engineering® Data Backup for Mac OS X v10.2.8 or later
    • NovaStor NovaBACKUP® for Windows 2000 or later
  • OWC Mercury Elite Pro Qx2 Manual (1.5MB PDF)
  • Over 1.5GB of Freeware/Shareware/Public domain software pre-installed
  • OWC 3 Year Solution Warranty with 48-Hour Turnaround Time
  • Complimentary 6 Month Level 1 Data Recovery

Additional Information

Colour Silver
Capacity 4.0TB
Number of Bays/Drives 4
Model Identifier N/A
Connection eSATA, FW400, FW800, USB 2.0, USB 3.0
Form Factor 3.5 inch
Manufacturer OWC
Manufacturer P/N OWCM3QX2T04.0S
UPC 794504334456

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Macfixit Australia is an Australian owned and operated business based in Melbourne, Victoria and we've been operating since 2005.

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