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The Knock-off Duino is functionally the same as the Arduino Uno R3 at a fraction of the cost. It uses the CH340G usb to serial chip instead of the 16u2/8u2 found in the official Arduino Uno R2/R3 so you will need some different drivers. These can be found below.

Drivers for windows:

Drivers for OSX:

Install guide for OSX El Capitan:

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