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USB 3.0 Media Reader

High Speed File Transfer Device
Sonnet's DiO Pro CompactFlash and SDXC USB 3.0 Media Reader quickly transfers files from CompactFlash (CF), SDXC and SDHC™ memory cards to your computer on location, in the studio, or at the office. With one slot each for CF and SD media, DiO's ability to transfer data from the fastest professional memory cards at much higher speeds than USB 2.0 card readers are capable makes for a significantly more convenient and efficient workflow. This handy device also supports concurrent and card-to-card file transfers.

DiO can ingest files from your pro memory cards up to four times as fast as other card readers. What's its secret? This Sonnet reader exploits its 5.0 Gb/s SuperSpeed USB 3.0 interface to deliver superior performance with suitably equipped computers. DiO is UDMA6-enabled and UHS-I-compliant for CF and SD media, respectively. As a result, Sonnet's high-performance memory card reader transfers data from currently available CF cards at up to 70 MB/s, while it supports at full speed the fastest available SDXC and SDHC memory cards, as well as future cards up to 104 MB/s.

This little, rugged Sonnet pro media reader is compatible with Windows® desktop and laptop computers with USB 3.0 ports. Got a Mac®? It is also compatible with Mac® Pro computers with Sonnet's Mac OS® X-compatible Allegro USB 3.0 PCIe adapter card installed, and MacBook Pro computers using Sonnet's Mac OS X-compatible USB 3.0 ExpressCard/34 adapter. No USB 3.0 ports at your disposal? DiO is backward compatible with USB 2.0 connections, too.

Download Files in a Flash. With a compact and durable design, Sonnet's DiO provides lightning-fast access to your files stored on CompactFlash and SD media cards via a USB 3.0 interface. No USB 3.0 port? No problem. DiO is completely USB 2.0 backward compatible.


  • Dual Format Memory Card Reader-One slot each for CompactFlash (CF) and SD (SDXC, SDHC, SD) media
  • Fast USB 3.0 Interface-5.0 Gb/s SuperSpeed USB 3.0 interface delivers superior performance with USB 3.0 port-equipped computers
  • Fast File Transfers-Transfers data from CF cards at up to 70 MB/s, SDXC and SDHC memory cards at full speed (limited by card)
  • Small and Rugged-The case measures just 2.7 inches wide x 2.5 inches deep x 0.8 inches tall; no doors or pop-up mechanisms to break or interfere with use

Product Specifications

Manufacturer Part Number

  • DIO-USB3

External Connections

  • USB 3.0 Micro B
  • CompactFlash
  • SD

Compact Flash Slot

  • Supported Media: Type 1 CompactFlash
  • Media Connector Type: Push/pull media card connector
  • Data Transfer Rate: Up to 70 MB/s

SD Slot

  • Supported Media: SDXC, SDHC, SD
  • Media Connector Type: Push/pull media card connector
  • Data Transfer Rate: Up to 104 MB/s


  • RoHS


  • 2.7" x 2.5" x 0.8"
    (68 x 63 x 20 mm)


  • 5.5oz.


Manufacturer provided specifications for Sonnet Technologies p/n DIO-USB3 UPC#: 732311008764


  • Dio 2-Slot CompactFlash and SDXC USB 3.0 Pro Media Reader
  • 1-meter USB 3.0 cable


Customer Ratings

Write a Review 5 / 5 1 out of 1 (100%) reviewers would recommend this product
Verified Buyer Top 250 Contributor
Reviewer: Anonymous Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Speedy February 3, 2016 So much faster than the SD port on my MBP. Really increased productivity. Solid, reliable.

I would recommend this item to a friend!

Sonnet DiO USB 3.0 Media Reader Mfr P/N: DIO-USB3 OWC SKU: STIDIOUSB3 USB 3.0 Media Reader - USB 2.0/1.1 compatible - Supports CompactFlash (CF) and SD (SDXC, SDHC, SD) media cards! Sonnet Technologies 1 Year Limited Warranty
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