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SuperSpeed PCI Express Card
2 Port USB 3.0 Host Adapter

The CalDigit SuperSpeed PCI Express Card is the first to offer USB 3.0 connectivity to both Mac and PCs with an available PCIe slot. This two-port card enables the use of next generation USB technology, capable of speeds up to 5 Gbps. Originally designed for the CalDigit AV Drive, the SuperSpeed Card now opens the door enabling the use of the latest USB 3.0 devices.
Designed with CalDigit high quality components
Utilizing the latest technology, the SuperSpeed Card provides two 5 Gbps USB 3.0 ports on a PCI Express 2.0 card.

While windows users have had access to USB 3.0 drivers for some time, there was never a driver for the Mac. So CalDigit's engineers developed the first USB 3.0 driver for Mac OS X. For the first time, both Mac and PC users are able to take advantage of the superior speeds of USB 3.0.

Ideal for fast storage, the CalDigit SuperSpeed Card was designed to provide the CalDigit AV Drive the fastest connection possible. With speeds of over 145 MB/s from a single drive, the AV Drive has become the worlds fastest dual interface drive. With new USB 3.0 devices being announced everyday, the CalDigit SuperSpeed Card lets users take advantage of this next generation connectivity.

Why USB 3.0? Simply put, USB 3.0 is fast! With speeds of up to 5 Gbps, it's faster than eSATA and FireWire. USB 3.0 is also backwards compatible with USB 2.0, so you can continue to use all your existing devices. Unlike eSATA, USB 3.0 provides power so devices can be bus powered. USB 3.0 supports video and audio playback much better than USB 2.0.

The CalDigit SuperSpeed Card also provides the ability to provide extra power at the connectors. This is ideal for bus powered devices that demand more power than standard USB ports.

Product Specifications

Manufacturer Part Number

  • U3-ExpressCard


  • Available PCIe 2.0 x1 Lane Slot
  • Not compatible with USB hubs


  • Two External USB 3.0 SuperSpeed Type A Ports


  • External - 2 Devices

Bus Specifications

  • x1 PCI Express host interface
  • Supports PCI Express Base Spec 1.0a

Form Factor

  • PCI Standard

Operating System Support

  • Windows® Server 2003, 2008, XP, Vista
  • Mac® OS X 10.4.x or greater
  • Linux

External Connectivity

  • x2 USB 3.0connector

Internal Connectivity

  • none

Agency Approvals & Compliance

  • FCC Rules, Part 15, Class B
  • RoHS Compliant


  • 80mm (3.2in) x 68.5mm (2.7in) x 1.6mm (0.063in)


  • 1.45 lbs

Operating Temperature (Hardware Environment)

  • 32°F ~ 104°F (+0°C ~+ 40°C)

Operating Temperature (Storage Environment)

  • 4°F ~ 140°F (-20°C ~ +60°C)

Relative Humidity

  • 0% ~ 80% non condensing


Manufacturer provided specifications for CalDigit p/n U3-ExpressCard UPC#: 4712010080205



  • 1 x CalDigit SuperSpeed PCI Express Card
  • 1 x Quick Start Card
This product is compatible with...Click here to get your Model Identifier number.
Mac Pro
Mac Pro 8-Core (Mid 2010)
(July, 2010)
Model ID: MacPro5,1
Mac Pro
Mac Pro (Mid 2010 Quad-Core)
(July, 2010)
Model ID: MacPro5,1
2.8GHz, 3.2GHz, 3.33GHz
Mac Pro
Mac Pro (Early 2009 8-Core)
(March, 2009)
Model ID: MacPro4,1
2.26GHz, 2.66GHz, 2.93GHz
Mac Pro
Mac Pro (Early 2009 Quad-Core)
(March, 2009)
Model ID: MacPro4,1
2.66GHz, 2.93GHz, 3.33GHz
Mac Pro
Mac Pro (Early 2008)
(January, 2008)
Model ID: MacPro3,1
2.8GHz, 3.0GHz, 3.2GHz
Mac Pro
Mac Pro (8-core)
(April, 2007)
Model ID: MacPro2,1
Mac Pro
Mac Pro
(August, 2006)
Model ID: MacPro1,1
2.0GHz, 2.66GHz, 3.0GHz
PC Desktop
PC running Windows, Linux or FreeBSD and available PCI-Express x1 lane or better slot

Customer Ratings

Write a Review 5 / 5 2 out of 2 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: clicstudio Location: Miami Beach, FL Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 40% faster than FW 800 August 26, 2012 I am using this card on a 2010 Mac Pro with USB 2.0 and Firewire 800. I was hoping for a new Mac Pro for this year but Apple is going to make us wait. What I love about the Mac Pro is the PCIe's that let you upgrade the "old" Mac Pro to new standards. The installation took 10 seconds and I downloaded the latest driver from the CalDigit site. A restart and instant USB 3.0 on a Mac Pro! I am using a Seagate 3TB USB 3.0 HD for Time Machine in one port and a Lexar Compact Flash/SD Card Reader on the other port. I am getting 40% faster reads and about 25% faster writes to my Lexar 1000X Professional Compact Flash Card. Basically 1GB of Photos takes about 9 seconds on USB 3.0 and 14 seconds on FW800. Every second counts ;) And this is a great, inexpensive add on to any Mac Pro

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Phoenix, Arizona Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 works like a champ November 25, 2011 Just got this out of the box and installed into my Mac Pro running OSX10.6. hardware installation is, of course, a no-brainer with the ease of a the MacPro case and the driver installed quickly. It comes with driver on the accompanying CD. I then preceded to plug in two USB 3.0 2-TB harddrives (the Mercury Elite Pro Classics from OWC), and they were recognized right away.

I did a quick test by plugging in an external USB 2 drive and then copied a 1.5GB file from my Mac's internal driver to both the USB 2 and one of the USB 3 drives. Hands-down the file copied over to the USB 3 significantly faster! I also just ordered a USB 3 hub so that I have more ports. I am hoping that will work smoothly as well.

I would recommend this item to a friend!

CalDigit SuperSpeed PCI Express Card 2 Port USB 3.0 Host Adapter Mfr P/N: U3-ExpressCard OWC SKU: CDGU3HOSTADPTR For Mac Pro or Windows PC with PCI express slot. With speeds of up to 5 Gbps, USB 3.0 is faster than eSATA or FireWire and is now available for the Mac Pro! CalDigit 1 Year Limited Warranty
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