Recommended · for beginners
How to fix Arduino serial port bug on MAC OS SIERRA
Why people recommend it
Fixes an Arduino clone not appearing as a serial port on macOS Sierra by installing the CH340 driver; it helped some people but not all.
Watch for: only applies to boards with a CH340 USB chip
In their words
After watching a YouTube video, I fixed the problem by following its suggestion of installing the CH34X driver.
Shan Dou on arduino.stackexchange.com, Jun 2018. CC BY-SA.
Found this on youtube: [video] what do you think?
codeinprogress on arduino.stackexchange.com, May 2017. CC BY-SA.