JohnJohn
(John Johnson)
2
Go to the Console window where the computer says:
‘Waiting For Connection’
Click on the middle bottom button.
see if there’s an option for ‘usbmodem’
sometimes macs default to a bluetooth device instead of the correct device for it to communicate.
If you follow this to the end you may find that this works for you.
Some Mac computers need to have the CH340 driver installed. Have a look at this. https://www.instructables.com/Arduino-Nano-USB-Not-Recognizing-Fix/