Rodolphe, thank you so much. That's exactly the level of detail I needed. I've just ordered a Raspberry Pi 4B from GB and will try again to establish a working connection. I'm sure that I'll have some additional questions after it arrives. Best regards, Ted.

Is there not a way to use an ethernet cable, in between two USB cables, to extend the distance? I've seen references to this solution, but no recommendations for connectors, cables, or anything else that's necessary. Thanks very much!!

Is there a USB 3.1-Ethernet-USB 3.1 cable or hardware arrangement available to allow me to move my rig with an Ultimate Powerbox v2 about 30 meters away from my Mac? I've read numerous posts on other boards that this arrangement is possible, but I'm clueless about what pieces are required and how to...