This is a very common problem encountered by most Arduino beginners and, on occasion, by those with intermediate Arduino experience. Your IDE will not recognize the connected Arduino board, and your device manager will report "unknown USB device". To fix it, you may need to download and install the CH340G drive.
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em encountered by most Arduino beginners and, on occasion, by those with intermediate Arduino experience. Your IDE will not recognize the connected Arduino board, and your device manager will report "unknown USB device". To fix it, you may need to download and install the CH340G drive.
*Download the driver from http://www.wch-ic.com/downloads/CH341SER_ZIP.html
*Download the driver from http://www.wch-ic.com/downloads/CH341SER_ZIP.html