I have this issue where my I can't connect my Arduino Mega2560 to my macbook. I have the arduino connected through a usb a/b to a usb hub, which in turn connects to a usb c port on the macbook. I'm running Mac OS X Catalina 10.15.7
I think it might be a problem with drivers because nothing usb serial related shows up when i do "ls /dev/tty*" in the terminal
I know it's definitely not an issue with the board or the cable as they both worked when connected to a windows machine, which is no longer available to me.