Have you the Chinese clones ? They need a different driver to work ....
https://www.google.co.uk/amp/www.instructables.com/id/Arduino-Nano-CH340/%3Famp_page=true
Have you the Chinese clones ? They need a different driver to work ....
https://www.google.co.uk/amp/www.instructables.com/id/Arduino-Nano-CH340/%3Famp_page=true