Hi, I can't seem to get my newly acquired Arduino Uno (Rev. 3) board to show up on my Mac OS X ( 10.6.8 ) system reliably and now it's gotten to a point where it doesn't seem to show up at all. Until recently some combination of unplugging and re-plugging the board and the separate power supply wou…

Arduino Uno R3 doesn't show up in Mac OS X (10.6.8) system with USB?

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