@SO-Net-2020 "WPA8630P near the router with three LAN cables going into it" Actually that model has 3 lan ports in it so that when it is the one in the other room from the router then you can plug in...

@Snoopy74 Did you connect a computer to the cable out in the garage? From the status of the lights and your descriptions, it really does sound like the two powerline units are set up correctly but...

@Snoopy74 There is usually no need to join a wired network. Just start using the internet features of the TV. Joining a network is used for wifi because in densely populated areas one should not...

@Snoopy74 So let me see if I understand what you've got: That kit you bought has two little white boxes that plug into the wall mains. One is next to your router in the house, plugged into the wall,...

@Snoopy74 What model exactly did you get? There are several AV 600 speed models. Edit: I just saw the "TL-PA4010KIT" in the top part of your post. So you mention wifi and the TV. Did you plug in a...

@hedgehog90 The Netgear (or any other switch) will negotiate what speed to run the network based on what it thinks the connected devices are capable of running. I suggest if you have a friend who has...