@UnWired Thanks for taking the time to respond and provide information. As it turns out, the design IS correct, but there was an additional wrinkle that came to light after posting the original...

The typical home installation is to connect the customer WiFi router to the ISP modem and then connect EVERYTHING ELSE in the house to the customer WiFi router. This creates one "Layer 2" network....

@Ron726 When I click on an image in the tPLC app display, it shows the speed from that device to other devices. i.e. and Notice that the "speeds" are not symmetrical. The effective transmission rate...

@UnWired Appreciate you taking the time to respond. Is there anything on line that details the differences? Typically model numbers change because there has been some change in the actual components,...

I purchased two PA-9020 KIT version 1.0 in 2017, hoping to network much of my 1960's house. The 4th adapter in the garage was always unstable and I eventually gave up and installed another WiFi mesh...

Thanks for the workaround. I have actually solved my specific problem with KASA Smart Plugs by activating a second WiFi router. My problem was that I wanted to plug four WiFi access points into KASA...