Mojave not recognizing Metro- using a data USB cable

I've read thru so many of the posts here and thus made sure to purchase a USB data cable.
I'm using a USB 2.0 on a Macbook Pro Retina. The Metro does not show up on the USB tree nor in the the terminal search. I've installed drivers suggested in the Arduino set up guide. Reset my PRAM.
Still dead in the water.
I'm super beginner, this was to be my learners kit, and could use some suggestions (aside from the USB cable) Hoping I've just made an error somewhere along the way.

Thanks