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OWC Mercury
On-The-Go® Pro

2.0TB SSD
Bus-Powered, Multi-Interface Storage Solution

Mac / PC / USB 3.0 & 2.0 / FireWire 800 (FireWire 400 Backwards Compatible)
  • Mac
  • PC
  • FireWire 800/400
  • USB 3.0
The OWC Mercury On-The-Go USB 3.0 & 2.0 / FireWire 800 (FireWire 400 Backwards Compatible) Storage Solution provides maximum storage in an ultra-portable, totally bus powered design!
Outstanding Features
Built with the fastest and most reliable Solid State Drive on the market today. The Mercury SSD line features a suite of industry leading controller technologies for performance and reliability:
  • Global wear leveling algorithms automatically distribute data evenly and manage program/erase count, maximizing SSD lifespan.
  • StaticDataRefresh technology manages free space, gradually refreshing data across the SSD over time, limiting data corruption.
  • Hardware BCH ECC corrects errors up to 66-bit/1KB for superior data retention and drive life.
  • Fantastic power consumption: Average 60mW
  • Advanced security protocols support 128/256-bit-AES and TCG Opal full-disk encryption.
Compact and Versatile
If you're looking for one of the most compatible mass storage solutions made, look no further! The OWC Mercury On-The-Go drive is all you'll need! Packing a one-two punch of super fast USB 3.0 and FireWire 800, the OWC Mercury On-The-Go has what it takes to truly work cross platform. The Mercury On-The-Go Pro is bus-powered, so it doesn't require an AC adapter!
Cool and Silent
The OWC Mercury On-The-Go's fanless design offers near silent operation while still keeping your drive cool. The built-in aluminum heatsink underneath the drive and passthrough cooling vents on the top of the case work in tandem to provide optimum results. 
Fast and Reliable
The OWC Mercury On-The-Go uses the latest Oxford and ASMedia chipset for both USB 3.0 and FireWire 800. Designed to work with SATA hard drives and SSDs, this chipset is the latest evolution for the best performance on the market.
OWC Mercury On-The-Go SSD
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48 Hour Service

If your OWC or NewerTech brand product should require service during the warranty coverage period, we are committed to delivering the fastest possible service.


Upon receipt of your unit, OWC will make every attempt to service it and arrange shipping back to you all within 48 weekday (Monday-Friday) business hours, excluding U.S. national holidays. This warranty service timeframe does not include data recovery attempts, out of stock items/components, or upgrade/product replacements.


Read additional information.

OWC's A Closer Look

Take a closer look at
OWC's On-The-Go Pro.

Includes

Mercury On-The-Go includes
  • OWC Mercury On-The-Go Pro Bus-Powered, Multi-Interface, USB 3.0 & 2.0 / FireWire 800 (FireWire 400 Backwards Compatible) Storage Solution with SSD
  • 15" High Quality Double Shielded FireWire 800 connecting cable (9-9 Pin cable)
  • 16" High Quality Double Shielded USB 3.0/2.0/1.1 certified connecting cable
  • Carrying Case
  • Assembly Manual & User Guide

Gallery

Gallery Pic 1 Gallery Pic 2 Gallery Pic 3

360 Gallery

360 Gallery

Product Specifications:

Bus Interface

  • FireWire 1394B (IEE1394A/B/iLink Compliant), 2 9 Pin (powered) ports, backwards compatible with FireWire 400 (9-Pin to 6-Pin Cable) – requires FireWire 800 to 400 Cable/Adapter for use with 1394A Interface, see related items.
  • USB 3.0 / 2.0 / 1.1 Backwards compatible 9 pin mini "B" port.

Cables

  • All cables included. The USB cable connects to systems with USB, USB 2.0, and USB 3.0. No additional USB cable is needed to connect the drive.

Interface (Chipset)

  • USB 3.1 gen 1 (ASMedia ASM1153E)
  • FireWire 800 (JMicron JMB355)

Standard Mechanism

    Release Candidate (RC) firmware set

    There are two kinds of firmware for SSDs Mass Production (MP) and Release Candidate (RC). Prior to an MP firmware release, there are beta firmware releases and an RC firmware release. Often, the RC is the same as the MP release, however there can be small changes and bug fixes made between the two. OWC has evaluated the RC for the 6Gb/s SandForce 2281 Processor and found it to be stable with no issues reported during our testing. However, as with any evolutionary product, issues may surface as different usages and configurations are employed and it is important to understand that there will be further updates and revisions.

    Since no firmware update is currently offered for the OWC Mercury EXTREME Pro 6G SSD, no update page exists. To see the typical steps involved with a self performed field firmware update, please visit our 3Gb/s product update page at: http://eshop.macsales.com/Customized_Pages/Framework.cfm?page=sf_firmware.html

    It is important to note that the current firmware update tool requires the use of Windows XP/Vista/7. OWC is currently working on a Mac OS based update tool, but we do not have an exact availability date.

    2.0TB Mercury Extreme Pro 6G SSD Specifications:

    Specifications

    Controller
    Phison PS3112-S12 with 7% over-provisioning
    NAND
    Synchronous Triple-Level Cell (TLC) 3D NAND Flash
    Form Factor
    2.5-inch 7mm
    Interface
    SATA 6.0 Gb/s
    Capacity
    1920GB useable capacity
    Total Flash Memory Components – 2048GB
    128GB allocated to real-time data redundancy & error correction
    Formatted Capacity
    1788GiB
    RAID Support
    Yes
    SMART Attributes
    Standard attributes supported
    Native Command Queuing
    up to 32 commands
    Manufacturer Model Number
    S3D7P6GS2.0
    RoHS Compliant
    Yes
    Format
    Unformatted (Instructions on formatting here)

    Physical

    Height (max)
    0.7 cm (0.3 in)
    OWC 7mm – 9.5mm Adapter
    1 included (buy additional)
    Width (max)
    7.0 cm (2.8 in)
    Length (max)
    10.0 cm (3.9 in)
    Weight
    77.0 g (0.17 lbs)

    Reliability

    TRIM Support
    OS Dependent

    Performance

    Sequential Reads (Max)
    Up to 550 MB/s
    Sequential Writes (Max)
    Up to 530 MB/s
    Sequential 4K Read
    Up to 100,000 IOPS
    Sequential 4K Write
    Up to 90,000 IOPS

    Power

    Active
    Write: 2700mW (2.7W) Maximum draw

    Environmental (Operating)

    Altitude
    -304.8 m to 3,048.0 m (-1,000 ft to 10,000 ft)
    Temperature (°F)
    32°F to 158°F
    Temperature (°C)
    0°C to 70°C

    Environmental (Non-Operating)

    Altitude
    304.8 m to 12,192.0 m (-1,000 ft to 40,000 ft)
    Temperature (°F)
    -40°F to 185°F
    Temperature (°C)
    -40°C to 85°C

    Acoustics

    Idle (Typical)
    0.0 bels
    Seek (Typical)
    0.0 bels
    • 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. 
    • In terms of standard gigabytes, 1GiB ≈ 1.074GB and refers to the actual formatted capacity of shown under Mac OS 10.5 or earlier and Microsoft Windows OS.
  • 2.0TB* OWC Mercury EXTREME™ Pro 6G SSD**

  • *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 Interface

  • SATA (Serial ATA)

Port Configuration

  • FireWire 800 – (2) 9 pin powered ports
  • USB 3.0 – (1) 9 pin mini B port

Max Data Transfer Rate

  • FireWire 800 – 100MB/sec
  • FireWire 400 – 50MB/sec
  • USB 3.0 – 500MB/sec
  • USB 2.0 – 60MB/sec
  • USB 1.1 – 1.5MB/sec

Port/Interface Bootability

  • Can I use this solution as an external startup drive?
  • 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 3.0: 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

Format

Macintosh System Requirements

  • Mac OS 8.6 to 9.2.2 compatible, OS X 10.1.x and later. (10.2 or later required for FW800 and USB 3.0)
  • FireWire 800: Macintosh with FireWire 800 interface, either built in or via PCI FireWire 800 card.
  • FireWire 400: Macintosh with FireWire 400 interface, either built in or via PCI FireWire 400 card.
  • USB 3.0: Macintosh with USB 3.0 interface, either built in or via PCI USB 3.0 card.
  • USB 2.0: Macintosh with USB 2.0 interface, either built in or via PCI USB 2.0 card.

Windows System Requirements

  • FireWire 800: PC with FireWire 800 interface, either built in or via PCI FireWire 800 card.
  • FireWire 400: PC with FireWire 400 interface, either built in or via PCI FireWire 400 card.
  • USB 3.0: PC with USB 3.0 interface, either built in or via PCI USB 3.0 card.
  • USB 2.0: PC with USB 2.0 interface, either built in or via PCI USB 2.0 card.

Linux Requirements

  • Linux compatible via supported USB and FireWire interfaces.

Related Items

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.
  • Bus Power via FireWire 400 on all models made in 2001 or later via Factory ports or any model with add on FireWire 400 PCI Card.
  • Bus power via USB on most computers with factory installed USB 2.0 or USB 3.0 port.
  • Optional AC Adapter* (available as a separate purchase here)

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

External Case Dimensions

  • 3.5" (W) x 5.5" (D) x 1" (H)
  • 88.9mm x 139.7mm x 25.4mm

Enclosure Weight (no accessories)

  • 0.61lbs. (0.27kg)

User Guide

Operating Environment:

Temperature

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

Relative Humidity

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

Shock

  • (operating) 1500G 0.5mS;
  • (non-operating) 1500G 0.5mS

Vibration

  • (operating) 16G (16 – 1600Hz)
  • (non-operating) 16G (16 – 1600Hz)
Manufacturer provided specifications for Other World Computing p/n MS8U3SSDT2.0 UPC#: 810586034340

Awards

Customer Ratings

Write a Review 4.8 / 5 200 out of 214 (93%) reviewers would recommend this product
1 2 3 4
Verified Buyer
Reviewer: Enossified Location: Boston, MA Age: Over 65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Perfact for Firewire users December 3, 2020 Some of us keep our Macs going a long time, a decade or more, and as I/O ports change over time it's harder to get drives that will work with them. Any Mac with FW800 doesn't have USB 3.0 and USB 2.0 is much slower. Luckily OWC is still supporting Firewire and this enclosure is perfect for repurposing an older SSD. I can use it with FW800 for my old Macbook Pro and iMac or with USB 3.0 for my current MacBook Air. Even after my Firewire macs are finally retired, the USB 3.0 port will still be useful with newer Macs.

This is a nice step up from the less expensive OWC Express in terms of build quality. There's even a power switch, great for leaving the drive connected but powered off after ejecting. If you will be moving the drive around, the included storage pouch is a nice touch. Even better is that a USB-A to USB-C adapter is included, which I wasn't expecting.

I would recommend this item to a friend! This review is from OWC Mercury On-The-Go 2.5" Portable FW800 + USB 3.0/2.0 Drive Enclosure Kit.

Verified Buyer
Reviewer: tritimmy Location: Los Angeles Experience Level: Home User
Rating: 5/5 excellent drive and service September 2, 2020 Your Solid State drives continue to work great. Your customer service excels.

This review is from 500GB SSD OWC Mercury On-The-Go FireWire 800 / 400+USB3 SSD Portable Bus Powered Solution..

Verified Buyer
Reviewer: dba767 Location: NY, NY Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Exceeded Expectations July 8, 2019 I was looking for a solution to speedup my aging 2010 iMac. The good folks at Bombich Software (Carbon Copy Cloner) pointed me to this external SSD FireWire drive. The FireWire is the fastest external connection available on this vintage iMac. My idea was to clone my internal hard drive including the operating system to the external drive and use it as my boot drive. It took a few hours to clone the drive, but after that, the setup worked flawlessly. I highly recommend this drive.

I would recommend this item to a friend! This review is from 500GB SSD OWC Mercury On-The-Go FireWire 800 / 400+USB3 SSD Portable Bus Powered Solution..

Verified Buyer
Reviewer: katsat Location: Honolulu, HI Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Solved a big problem October 31, 2018 My husband has been using my old iMac which was good enough for his basic needs. Unfortunately, the internal hard drive gave out and it was too old / too troublesome to find a replacement for. After much effort I was able to hook it up with an old external hard drive, and that worked for a while, but that gave out, too. I finally found this external SSD hard drive with the discontinued FireWire800 connection and connected it to the old iMac. After some fiddling around, it finally worked like magic! Very happy with this product that marked the successful end of a big struggle.

I would recommend this item to a friend! This review is from 1.0TB SSD OWC Mercury On-The-Go FireWire 800 / 400+USB3 SSD Portable Bus Powered Solution..

Verified Buyer
Reviewer: Macsolvers Location: San Francisco Bay Area Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Was able to put to use quickly October 28, 2018 I have installed 2.5 inch drives in several of these enclosures before, and this one was just as easy to assemble. I am using the drive enclosure as a supplemental backup system.

I would recommend this item to a friend! This review is from OWC Mercury On-The-Go 2.5" Portable FW800 + USB 3.0/2.0 Drive Enclosure Kit.

Verified Buyer
Reviewer: driveeater
Rating: 4/5 installation was a bit difficult, but otherwise it's perfect October 23, 2018 I purchased this to use with an SSD drive from a mid-2009 MBP. Out of the box, i couldn't make it work, as the drive was a tinier bit wider than the space between the sides of the metal mounting tray. So i pried the sides a bit wider, manually [it took some force!], and then it barely slid in. Other than that, it's perfect -- fast, quiet, and i appreciate the shorter-length data cords.

I would recommend this item to a friend! This review is from OWC Mercury On-The-Go 2.5" Portable FW800 + USB 3.0/2.0 Drive Enclosure Kit.

Verified Buyer
Reviewer: TheBridge Location: Canada Age: 45-54 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Incredible Value October 6, 2018 This beautiful little case gave new life to an iBook G4 that refuses to recognize its internal drive. I'm able to boot using a FireWire 400 to 800 cable and supply power to the drive at the same time. USB 3 + FW interfaces means it's a no-brainer to quickly get files from my newer MacBook Pro onto this drive.

One of the earlier reviews of this device criticizes the difficulty of swapping out the drive because the back plate is very snug and deep... you risk damaging the circuit board if you try to pry the back plate out. I solved this by securely fastening two strips of tape to the top and bottom of the back plate to give me something to grip if I ever need to remove it. Works like a charm.

My only criticism of this device is that the rails of aluminum plate that the circuit board slides into bent inwards so that when it came time to slide the drive itself into the plate, it would not fit. A simple enough fix; I just gently straightened out the rails a bit at a time with pliers.

All in all an excellent product and, for the price (even with the exchange rate) an amazing value. I highly recommend.

I would recommend this item to a friend! This review is from OWC Mercury On-The-Go 2.5" Portable FW800 + USB 3.0/2.0 Drive Enclosure Kit.

Verified Buyer
Reviewer: awebdancer Location: Seattle Age: Over 65 Experience Level: Hobbiest Owned Product: less than a month
Rating: 5/5 Go Pro Hard Drive July 1, 2018 The Go Pro Hard Drive was very, very easy to install. I have an older mac and all the hard drives I looked at required a current OS system. I had attempted to install a Seagate that was made for my older mac and had to take my mac to an apple store, because the drive messed up my mac big time. The Go Pro was pretty much plug in - install the hardware, ask the time machine to set it up and it was good to Go!

I am very pleased.

I would recommend this item to a friend! This review is from 2.0TB OWC Mercury On-The-Go Pro Portable FW800&400/USB3 5400RPM Storage Solution.

Verified Buyer
Reviewer: Cricketphan Location: Hendersonville, NC Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Compact & Fast June 21, 2018 This is our 2nd On-The-Go Mercury drive from OWC (1st one ran out of space) and we couldn't be more pleased. Connection to our 2010 MacBook Pro was seamless, and the backup speed is outstanding. Truly plug and "play". THANKYOU, OWC!!

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury On-The-Go Pro Portable FW800&400/USB3 7200RPM Storage Solution.

Verified Buyer
Reviewer: KlownGuy Location: Portland, ME Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Second one April 26, 2018 This is the second one of these that I have purchased. Although my first one that I bought in 2011 was 500GB and it still works, I needed some more space. This one is the SSD version. I hope it lasts like the first one!

I would recommend this item to a friend! This review is from 250GB SSD OWC Mercury On-The-Go FireWire 800 / 400+USB3 SSD Portable Bus Powered Solution..

Verified Buyer
Reviewer: TheEudoraGuy Location: San Diego, CA Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 It's always the same April 2, 2018 Excellent products, stellar service. OWC never changes.

I would recommend this item to a friend! This review is from 2.0TB OWC Mercury On-The-Go Pro Portable FW800&400/USB3 5400RPM Storage Solution.

Verified Buyer
Reviewer: Josh12 Location: Josh12 Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Drive enclosure kit February 22, 2018 Very easy to install an SSD or HDD.

I would recommend this item to a friend! This review is from (*) OWC Mercury On-The-Go 2.5" Portable FW800 + USB 3.0/2.0 Drive Enclosure Kit.

Verified Buyer
Reviewer: Mike3334 Location: Northampton MA Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Just what I needed January 22, 2018 This little portable hard drive was just what I needed, easy to set up and exactly as described. Another good experience

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury On-The-Go Pro Portable FW800&400/USB3 7200RPM Storage Solution.

Verified Buyer Top 250 Contributor
Reviewer: DougB Location: AZ Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Fast and Dependable December 8, 2017 This drive is plenty fast enough for my purposes, as is FireWire 800. I've found FireWire 400 & 800 connectors to be very reliable, while USB has been comparatively finicky, now and then disastrously so. This package is a bit like a two-speed drive, first gear so you're sure to get there promptly no matter what, and second when top speed is the priority. My iMovie and Aperture working libraries are on this drive, and unlike on a USB3 thumbdrive that proved glacial, this Mercury kit on lowly FireWire creates no delays in working the programs. The enclosure isn't glamorous, but it nicely gets the job done, especially since this 5400 RPM drive needs no separate power supply.

I would recommend this item to a friend! This review is from 2.0TB OWC Mercury On-The-Go Pro Portable FW800&400/USB3 5400RPM Storage Solution.

Verified Buyer
Reviewer: ADAV Location: Toulouse, France Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Handy and good looking October 30, 2017 Nice manufacturing quality, good looking and all working at he first time. Excellent

I would recommend this item to a friend! This review is from OWC Mercury On-The-Go 2.5" Portable FW800 + USB 3.0/2.0 Drive Enclosure Kit.

Verified Buyer
Reviewer: MATT66 Location: Asia Age: 45-54 Experience Level: Power User Owned Product: 1-3 months
Rating: 2/5 The product not reusable friendly October 11, 2017 Bought the casing only and doing HDD self-installation. I have many different type of casing all this years and this is the only one i felt is not reusable friendly. Easy to install and the product was compact and nice but after you have pushed in the back plastic panel to complete the installation, it will be impossible to pull out again in future if you want to upgrade the HDD. Not recommended for someone if they want to swap the HDD often.

This review is from (*) OWC Mercury On-The-Go 2.5" Portable FW800 + USB 3.0/2.0 Drive Enclosure Kit.

Response from OWC, Call center October 23, 2017 The Mercury Elite Pro is designed for a single hard drive, and is not really meant to be swapped out regularly. The back panel can be removed, but it is not the easiest process. If using multiple drives with the same enclosure is a factor, we would recommend one of our docking stations, such as the Voyager Q.
Verified Buyer
Reviewer: diarma Location: Serbia | Europe Age: 55-65 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 5+ | Great features | great design | September 22, 2017 5+ | Great features | great design | - simply, all is perfect!

I would recommend this item to a friend! This review is from OWC Mercury On-The-Go 2.5" Portable FW800 + USB 3.0/2.0 Drive Enclosure Kit.

Verified Buyer
Reviewer: Woodstock Location: Avon, IN Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Never a problem May 2, 2017 I use my OWC Mercury On-The-Go Firewire portable drive to maintain backups of my 2009 MacBook Pro. No incidents at all to report and I'd not hesitate to buy the drive again...but I don't need to!

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury On-The-Go Pro Portable FW800&400/USB3 5400RPM Storage Solution.

Verified Buyer
Reviewer: Jedi Location: Vientiane, Laos Age: Over 65 Experience Level: IT Professional Owned Product: less than a month
Rating: 4/5 for use both on older and newer Macs! February 6, 2017 I just pulled out the original 500GB HDD on my mid-2010 MacBook Pro 15" (USB 2.0 and FW800 ports only), installed an SSD instead, upped the RAM to the max 8GB, and put the old HDD into the Mercury box. Worth doing, and while I had earlier bought the upgrade hardware from another source, OWC/MacSales would be an excellent supplier as well. Most of the rest of my Mac workstations and field use hardware is USB 3, so I was willing to pay twice of what an HDD case that had only USB 3 ports would cost to effectively double or triple my data transfer rates —compared to USB2— on the old machine, using the the FW800 interface, and also getting full USB3 speed on all the other machines in the house. Very robust design and clearly an excellent product. But again, probably not worth is if you have USB3 ports on your Macs, since FW800 is otherwise obsolete and long abandoned by Apple.

I would recommend this item to a friend! This review is from OWC Mercury On-The-Go 2.5" Portable FW800 + USB 3.0/2.0 Drive Enclosure Kit.

Verified Buyer
Reviewer: redram Location: Lithia FL Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 excellent support January 17, 2017 after calling to address a case where the unit was making noise , Iwas well taking care of. problem. It appears to be low power from USB cable so I switched to firewire as directed by support. no problem since.

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury On-The-Go Pro Portable FW800&400/USB3 7200RPM Storage Solution.

Verified Buyer
Reviewer: BubbaJ Location: Texas Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great Product November 25, 2016 I got this drive to be used as a Time Machine backup drive for an older Mac Book Pro. No problems & runs great. I've hooked it up to the laptop using both USB & Firewire (cables came with it).

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury On-The-Go Pro Portable FW800&400/USB3 7200RPM Storage Solution.

Verified Buyer
Reviewer: OldWorldComputing
Rating: 4/5 you may need the AC adapter November 20, 2016 I have several of these drive enclosures. They're very handy for tossing in the laptop bag. I also use them for rotating off-site backups. My only complaint is that, with some drives, they may require more power than is provided by USB or Firewire, which means you have to carry one of the AC adapter wall-warts AND be near a power outlet. This reduces the portability considerably. This drawback is barely implied by a tiny footnote on the product page, and is more explicit in the documentation that comes with the product. I suggest you buy one of the AC adapters and keep it with the unit, at least until you're sure the drive works reliably without it.

(I encountered the problem with HGST 1TB drives; some work without the AC adapter, some don't. Frustrating, especially until I figured out what the problem was.)

I would recommend this item to a friend! This review is from OWC Mercury On-The-Go 2.5" Portable FW800 + USB 3.0/2.0 Drive Enclosure Kit.

Verified Buyer
Reviewer: Fdisk2k Location: Lima - Peru Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Perfect enclosure for backups November 8, 2016 Perfect enclosure for backups or transport your digital media. Purchased a bare kit, since I've already my hard drive, the kit comes with cables and a plastic pouch.

I recommend this enclosure to do your backups always, don't wait until you are in big trouble.

I would recommend this item to a friend! This review is from OWC Mercury On-The-Go 2.5" Portable FW800 + USB 3.0/2.0 Drive Enclosure Kit.

Verified Buyer
Reviewer: Macheretic Location: People's Democratic Socialist Republic of Illinois Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Solid drive, flexible, portable solution November 3, 2016 This is my primary on-site backup drive. All my OWC drives, SSD or otherwise, have been very reliable. I recommend them over any other brand except Apple—and they are generally less expensive than Apple branded products.

I particularly like the drive enclosure. Very sturdy, well designed and made. The built in connection flexibility makes connection to almost anything easy, without adapters. The power switch is a nice touch, too.

Only downsides to this package are the took kit, which is kind of chintzy, though the little pry tool is very handy for getting components out of a laptop. The carrying case is well made, but the inner partition (to separate cables and drive enclosure) is too floppy and unnecessary considering the near impervious drive enclosure.

I would recommend this item to a friend! This review is from 1.0TB SSD OWC Mercury On-The-Go FireWire 800 / 400+USB3 SSD Portable Bus Powered Solution..

Verified Buyer
Reviewer: Anonymous Location: Michigan Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Excellent Product July 29, 2016 I have several of these OWC portable drives of varying storage capacity. All have performed flawlessly. I particularly like the variety of connectivity ports available in the several configurations. I have recommended these products to friends who have purchased and been equally satisfied.

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury On-The-Go Pro Portable FW800&400/USB3 7200RPM Storage Solution.

OWC 2.0TB OWC On-The-Go® Pro Mfr P/N: MS8U3SSDT2.0 OWC SKU: OWCMS8U3SSDT2.0 SSD Bus-Powered, Multi-Interface Storage Solution 3 Year OWC Limited Warranty Ships: Same Day
Reviews (214)
only $399.00
Add to CartOther World Computing MS8U3SSDT2.0 In Stock, Click to Buy Now
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  • 0GB
    • Ships: Same Day
    • Only $59.99
    • OWC Price $49.75
Solid-State Drive Models
  • 1.0TB
    • Ships: Same Day
    • Only $249.99
    • OWC Price $229.00
  • 2.0TB
  • 4.0TB
    • Ships: 10 Days
    • Only $949.99
    • OWC Price $899.00
  • 120GB
    • Ships: Same Day
    • OWC Price $79.75
  • 250GB
    • Ships: Same Day
    • OWC Price $99.75
  • 500GB
    • Ships: Same Day
    • OWC Price $139.99
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Black USB Y Cable Black USB 3.0 "Y" Cable Connect and power your external hard drive via USB on systems that lack sufficient power via USB! From $9.99
Power Adapter Optional AC Power Adapter for all OWC Mercury On-The-Go, Mercury Express AL 2.5" FireWire and/or USB Enclosures From $9.79
FireWire 800-400 Adapter FireWire 800-400 Adapter Provides a simple way to connect FireWire 400 devices to a FireWire 800 port From $7.99
FireWire 800-400 Cable FireWire 800-400 Cable 12″ FireWire 9-Pin to 6-Pin Interconnect Cable From $3.99
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