Thanks so much for this reply.
A while back I had a 49 key usb/midi controller (maybe it was called key station? I’m not certain) on an older iMac and older OS (I think it was 10.7) and everyone recognized each other and it was truly plug and play, at least on GarageBand, Cubase and Ableton (I was dabbling in every free or trial version I could find to try to figure out where to land at the time).
I got a great deal on the Yamaha and I can use the usb for power but not connecting — had no idea that, like a printer, it would have its own driver.
I’m going to check it out but your concise, direct reply just saved me from wasting time googling what might or might not be right, if even relevant, lol…