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OWC Envoy Pro EX

256GB Portable, Bus-Powered USB 3.0
Storage Solution Apple 256GB Samsung SSD

Demo | Open Box | Used

Mac / PC / USB 3.0
Ultra-portable, SuperSpeed bus-powered external SSD storage solution.
While elegant in design, the true beauty of the OWC Envoy Pro EX might be its rugged, high-peformance capabilities. Easily carried in a coat pocket, backpack, or briefcase.

The Envoy Pro EX can handle any demanding storage and/or backup need in the office or on the road. And because it's USB 3.0 bus-powered*, the Envoy Pro EX doesn't require an AC power adapter, making it the ideal Plug and Play external storage solution.
*Requires USB 3.0 standard powered port. USB 2.0 use not supported or recommended.


Envoy Pro EX includes
  • OWC Envoy® Pro EX USB 3.0 bus-powered Storage Solution
  • Carrying Case
  • High-quality double-shielded USB 3.0 standard A to Micro-B connecting cable
  • Envoy Pro EX Owner's Manual


OWC Envoy Pro EX Specifications:


  • Apple 256GB Samsung 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.


  • High-performance ASMedia 1053e chipset

Interfaces Supported

  • USB 3.0 interface

Port Configuration

  • USB 3.0 interface (Micro-B port)

Max Data Transfer Rate

  • One Micro-B USB 3.0 port, up to 500MB/s


  • Bus-powered via USB 3.0 port (no AC adapter required)
  • Anodized aluminum finish
  • Super-quiet, fanless operation
  • Non-skid rubber feet

System Requirements

  • Mac® Requirements: Mac OS 10.3 or later and an available and supported USB 3.0 port.
  • PC Requirements: Windows XP or later and an available and supported USB 3.0 port.
  • Linux® Requirements: Linux OS versions and an available and supported USB 3.0 port.


  • Silent, fanless operation

Power Supply

  • Bus-powered via USB port (no AC adapter required)

External Case Dimensions

  • 2.125 in (W) x 4.5 in (D) x .4375 in (H)
  • 53.98 mm (W) x 114.3 mm (D) x 11.11mm (H)

Enclosure Weight (no accessories)

  • 3.4 ounces
Operating Environment:

Environmental (Operating)

  • Temperature (°F) 32°F to 158°F
  • Temperature (°C) 0°C to 70°C

Environmental (Non-Operating)

  • Temperature (°F) -67°F to 302°F
  • Temperature (°C) -55°C to 150°C


  • Idle (Typical) 0.0 bels
  • Seek (Typical) 0.0 bels


90 Days OWC Solution Limited 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 90 Days OWC Solution Limited Warranty

Manufacturer provided specifications for Other World Computing p/n ENVPOU3SA24P


Click any of the benchmarks below to view the results.


Customer Ratings

Write a Review 5 / 5 2 out of 2 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: randommac Location: Portland, Maine Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Fast & Beautiful April 24, 2018 I have moved my iTunes library to this Envoy Pro 256GB, and it makes day to day computing so much smoother! My music collection was approaching 100GB on my MacBook Air leaving less and less room for work files. I tried a 128GB on an SD card, but it soon became too small, and was always S-L-O-W. My WD "My Passport" external hard drive connected via USB 3 worked fine, but was more bulk than I wanted to carry. Then I compared speeds with Blackmagic's Disk Speed Test app:

SD card: write 15 MB/s & read 84 MB/s WD HD: write 103 MB/s & read 115 MB/s Envoy Pro: write 354 MB/s & read 415 MB/s

Add in the sleek lines of the Envoy Pro, the solid feel, and the slightly smaller than a USB hard drive size, and I'm hooked.

I would recommend this item to a friend! Customer Videos:

Verified Buyer Top 100 Contributor
Reviewer: GaryH Location: Bedford Tx Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Lots of Bang for the buck December 7, 2016 Use this to backup and clone iMacs , Very fast, runs cool No problems at all.

I would recommend this item to a friend! Customer Videos:

OWC 256GB Envoy® Pro EX Mfr P/N: ENVPOU3SA24P OWC SKU: OWUENVPOU3SA24PPortable, Bus-Powered USB 3.0
SSD Storage Solution
90 Day OWC Limited Warranty
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