1.0TB OWC Mercury On-The-Go Pro
USB 3.2 (5Gb/s) Bus-Powered Portable External Storage Solution
Mfr P/N: OWCMSU35S1GB8 OWC SKU: OWCMSU35S1GB8
$90.99 off - *NOW* Get Parallels Desktop Pro Edition - Windows/Multi OS Compatibility software for Mac - Only $29.00 with select OWC SSDs, HDDs, Memory, External Storage, and Optical Drives! (Limit 3 rebates, 1 rebate per qualifying item)
Must purchase with: Parallels Desktop Pro Edition for Mac - 1 Year License. SPECIAL PURCHASE
Adapter Bundle Savings - Get $5.00 off Apple USB-C to USB-A Multiport Adapter with select items (Limit 10)
Must purchase with: Apple Genuine USB-C to USB-A Multiport Adapter with USB-C Power + VGA Out
Maximum Storage in an Ultra-Portable Bus-Powered Design
- Sleek, impact-resistant acrylic enclosure
- Bus-powered, no AC adapter needed
- Quiet, fanless operation
- An aluminum heatsink and passthrough cooling vents keep your drive cool
- Small enough to fit in your pocket
- 3 Year OWC Limited Warranty
Compact and Versatile
Cool and Silent
SuperSpeed Ready, Yet Backward Compatible
Ready to go. Right out of the box.
Includes
- (1) OWC Mercury On-The-Go Pro External Storage Solution
- (1) High Quality Double-Shielded USB 3.2 (5Gb/s) Micro-B to USB-A Cable
- (1) Carrying Case
- 3 Year OWC Limited Warranty
Need an additional power supply? Secondary/replacement power supplies are also available.
Specs
Drive Bays
- 1 bay
Total Capacity
- 1.0TB
Total Solution Cache Size
- 8 MB
Drive Mechanism
- (1) 1TB HGST Travelstar 5K1000 5,400RPM 2.5-inch SATA 6.0Gb/s 5400RPM Hard Disk Drive with 8 MB cache
- *OWC reserves the right to replace or upgrade to equivalent or better components.
Plug and Play
- Yes
Drive Format
- HFS+ for Mac systems
- Windows and Android users please consult OWC Drive Setup for Windows, Chrome, and Android Platforms for formatting instructions
Storage Interface
- SATA
Device Ports
- (1) USB 3.2 Gen 1 Micro-B Port
Data Transfer Rate (Maximum)
- USB 3.2 Gen 1 : Up to 5Gb/s (or 625MB/s)
- USB 2.0 : Up to 480Mb/s (or 60MB/s)
- USB 1.1 : Up to 12Mb/s (or 1.5MB/s)
Chipset / Controller
- Asmedia ASM1153E
Mac OS Compatibility
- Mac OS 8.6
- Mac OS 9.0
- Mac OS 9.1
- Mac OS 9.2
- Mac OS X 10.0 Cheetah
- Mac OS X 10.1 Puma
- Mac OS X 10.2 Jaguar
- Mac OS X 10.3 Panther
- Mac OS X 10.4 Tiger
- Mac OS X 10.5 Leopard
- Mac OS X 10.6 Snow Leopard
- Mac OS X 10.7 Lion
- Mac OS X 10.8 Mountain Lion
- OS X 10.9 Mavericks
- OS X 10.10 Yosemite
- OS X 10.11 El Capitan
- macOS 10.12 Sierra
- macOS 10.13 High Sierra
- macOS 10.14 Mojave
- macOS 10.15 Catalina
- macOS 11.x Big Sur
- macOS 12.x Monterey
- macOS 13.x Ventura
- macOS 14.x Sonoma
- macOS 15.x Sequoia
PC OS Compatibility
- Windows 98 SE
- Windows 2000
- Windows ME
- Windows XP
- Windows XP 64-bit Edition
- Windows XP Professional x64 Edition
- Windows Vista
- Windows 7 32-bit Edition
- Windows 7 64-bit Edition
- Windows 8 32-bit Edition
- Windows 8 64-bit Edition
- Windows 8.1 32-bit Edition
- Windows 8.1 64-bit Edition
- Windows 10 32-bit Edition
- Windows 10 64-bit Edition
- Windows Server 2019
- Windows Server 2022
- Windows 11
Other OS Compatibility
- Linux supported via USB interface
Other Requirements
- Time Machine Compatible
External Power Adapter
- Optional
Power Supply
- Bus-powered (Optional AC adapter)
- Need an additional power supply? Secondary/replacement power supplies are also available.
Security Slot
- No
Power/Activity LED
- Yes
Housing Color
- Clear
Housing Material
- Acrylic
Dimensions
- Height: 2.5 cm (1.0 in)
- Length: 14.0 cm (5.5 in)
- Width: 8.9 cm (3.5 in)
Weight
- 405.0 g (0.89 lbs)
Country of Origin
- China
TAA Compliance
- No
Altitude
- Operating: -304.8 m to 3,048.0 m (-1,000 ft to 10,000 ft)
- Non-Operating: -304.8 m to 12,192.0 m (-1,000 ft to 40,000 ft)
Humidity
- Operating: 8% to 90% non-condensing
- Non-Operating: 5% to 95% non-condensing
Benchmarks
Truth in Numbers: Another OWC Difference
There are many attributes that define “The OWC Difference.” By listing real-world performance tests of OWC solutions, we’re confident you’ll be completely satisfied with your technology investment.
macOS Test Results
Blackmagic Disk Speed Test
USB 3.1 Gen 1

AJA System Test
USB 3.1 Gen 1

Windows Test Results
CrystalDiskMark
USB 3.1 Gen 1
AJA System Test
USB 3.1 Gen 1
Compatibility & Installation Videos
MacBook Pro

Requires USB Type-C to USB Type-A adapter

Requires USB Type-C to USB Type-A adapter

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MacBook Air

Requires USB Type-C to USB Type-A adapter

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MacBook

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PowerBook









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Mac Studio



Mac mini

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PC Compatible

Customer Reviews
I have an older MAC and I was in need of extra storage. OWC made finding a solution easy by documenting which of their products work with legacy, older MACs. From there it was effortless in finding a solution to my data storage problem. Their external storage products are detailed and well documented so you know what you get, and checking out was easy. After transaction, communications were good as well, I got a receipt in my e-mail along with a product tracking number to observe the logistical transport journey. It arrived a day early in fact and that was transparent. All of this is why I give five stars and when I upgrade to a better computer I will very likely go with OWC products in the future to make managing digital storage easier.
I would recommend this product to a friend!
- Reviewer:Reviewer3016100240
Thank you for sharing your fantastic experience! We're thrilled to hear that you found our documentation helpful in identifying the perfect storage solution for your older Mac. It's awesome to know that the checkout process was smooth and that you received timely communications throughout your order. We love that your package arrived early too! Your satisfaction means the world to us, and we’re excited to continue supporting your data storage needs! Please feel free to contact us if you have any further questions, comments, or concerns. https://eshop.macsales.com/Service/
Very best enclosure for backup drive for me and the people I help
I would recommend this product to a friend!
- Reviewer:ClearAnteater-24857
Wow, thank you so much for your fantastic review! We're thrilled to hear that our external storage enclosure is working perfectly for your backup needs and for those you assist. It's always our goal to provide high-quality products that make your life easier. Your support means the world to us! Please feel free to contact us if you have any further questions, comments, or concerns. https://eshop.macsales.com/Service/
Within a day or two of getting the drive and formatting it, it started displaying an error when connecting it. A week later, it died. Mine came with a Toshiba PC L200 HHD, and it was in line with my experience with other Toshiba products: It deserves 1 star. Contacted support and told them of my experience and still haven't heard back after 10 days. Absolutely brilliant.
- Reviewer:CuriousEagle-64906