CH340G USB serial converter 3.3V / 5V. This chip is the standard USB to serial converter used on compatible Arduino boards. When ever you have a serial port with TTL logic level, you can use this little adapter to make it “USB compatible”.
Just connect RX/TX to the TX/RX pins on the Arduino controller.
Windows 32/64 bit and Mac OS X (10.9 or higher) driver are available for download.
Driver for Mac OS X 10.9+
Driver for Windows 32/64
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