The non-official Arduino UNO or Arduino NANO and other Arduino compactable boards often come with CH340 based USB to Serial adapter IC on it. This board is not natively available via Arduino IDE.
So we have to add the driver to the system manually by udating it.

CH340 Driver download link for windows :
[ Ссылка ]

CH340 Driver download link for Mac :
[ Ссылка ]

свернуть