| If you are using the Qio or Qio E3 connected via Thunderbolt to a Mac running OS X 10.8.2+, this is a known issue that may be fixed by installing this software patch .
Background
With the release of OS X 10.8.2, Apple disabled USB 2.0 drivers over Thunderbolt. Because many SD-to-SxS adapters use the ExpressCard USB interface, and Qio and Qio E3 support USB-based adapters through the ExpressCard (SxS) slots' USB interfaces, the adapters are not recognized under 10.8.2+. Sonnet's USB 2.0 Over Thunderbolt Patch for Qio/Qio E3 removes the limitation and allows your adapter to be recognized.
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