Port selection on mac

Dress code, funny!, damn auto correct. I’m leaving it though.
I have a power supply on the breadboard and I suspect it may have been turned off when I powered up the nano. I noticed before that the nano will drive some current, enough the light the led on the power supply at least, so maybe that was large enough and long enough to damage the nano. I’ll get in there and play with it more.
I know there won’t be a problem with using a Mac, but I read some conflicting suggestions that I may need to download drivers and others that say Mac has them all. I’ll let you know what happens later on.

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