Lexar CF card reader problem.

Started Apr 26, 2012 | Discussions thread
James A. Senior Member • Posts: 1,232
My Lexar 4GB 133x ejects/ remounts on Mountain Lion with Sandisk Reader

I have a 2012 Macbook Pro Retina with a Sandisk SDDR 189 USB 2.0 card reader. For whatever reason my card reader when plugged into my RIGHT USB port with my LEXAR 4GB professional 133X CF card will eject/dismount and then remount, then do this again and again and again. Occassionally after doing it a few times it will stay connected. There are times though when it is connected on the right port that it will dismount/eject on its own during mid-transfer. I'm running 10.8.4 as my operating system. However on the left USB port it works fine.

My Sandisk brand CF cards ranging from 15mb/sec to 30mb/sec work perfectly on both USB ports. Go figure.

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