Tx and Rx are transmit and receive, both for the powerline connection. You yourself may not use any extra electrical devices, but your neighbours might. Also, you certainly do turn lights on and off,...

For WiFi cloning via button method, you need to trigger WPS on your router and push the button on the 8630. Alternatively, you can manually configure the 8630 to use the exact same SSID and...

While the supply voltage may fit, powerline emissions regulations do differ from country to country. You may be in heavy violation of local radio emissions rules - and if you're disturbing e.g. a...

I find the 7000 and 9000 series quite poorly maintained, at least as far as firmware updates and improvements go. I recommend you bring these back and get a pair of 8030P instead.

You don't need another router, you just need another WLAN access point. That's exactly what those WLAN-enabled powerline kits are for.

How about using the adapter's web interface to choose a channel?