Cool, so a computer directly talks to the micro-controller via USB?

Well, kind of. In fact, the USB connection goes through a CH340g module, a USB-UART converter. While USB is a connection type widely available on computers, micro-controllers like the one controlling the CrcDuino prefer “talking” over a serial interface. Therefore, your computer is in fact “talking” to the CH340g module, which then translates and send everything to the micro-controller.

If a CrcDuino board can’t be recognized by a computer, it’s important to make sure that the most recent CH340g driver is installed on the computer, so that the computer knows how to communicate with the CH340g module installed on the board.