Sone of the Arduino compatible NANO chips sue the FTDI chip and others have the CH340g chip. If you are not able to get your Arduino NANO to properly register with your computer, thy the driver link below. This seems to be especially problematic with MAC users.I was able to solve the problem by following the directions and downloading the driver stored at the following GitHub repository: https://github.com/adrianmihalko/ch340g-ch34g-ch34x-mac-os-x-driver This seems to work well. The instructions also list how to pull the driver down using brew. Perhaps you could store these instructions on the DuinoKit web site? I’m sure there are others who have struggled with this. Best wishes.— Alexander.