But it works.
Where the router had to be moved as far as possible in the vicinity of the Amazon Fire TV box before getting to via Wi-Fi to achieve reasonably good video quality when streaming, the data flow is now easy through the power line. Where previously the Sonos came into power in the kitchen only on a good day at all via Wi-Fi, it misses now, as if the unit is connected directly to the router.
The best thing for me: Anders, as one might guess based English-language instructions that work even if the machine is not placed directly in the wall outlet, but also when it is plugged into a power strip - what luck, if in the old apartment only per room in one corner at all times a socket from the wall looks! This avoids arge Zusatzkabelage. And the hours of Schränkeverrücken to get ever shoehorned into the wall socket, the little clunky device, I would have to give confidently. :-)
I'm excited and I've already ordered the version with three LAN ports to the next Amazon Fire TV box also still be able to connect the Blu-ray player and the receiver without WiFi.
The supplied software - even with English manual - is not exactly self-explanatory for lay people who have no idea of networks, but if you just want to quickly expand the network via sockets that goes anyway Ratzfatz, without software. Security is intended to be guaranteed by "pairing": pressing a button on a device, then within ten seconds at the other: then the two can communicate with each other. What happens if in the apartment below me someone just then so randomly paired a device? I do not know, the probability is simply too low. How secure is the encryption allegedly applied between the devices is - well I do not know and just hope that the data are at least as safe as if I had it trumpeted over Wi-Fi.
Addendum: so it does not work very smoothly but I unfortunately had to end the short trial, easy to connect your PC to Dlan on a power strip, hanging on the PC and PC speakers. I hanging even the TP-Link box there ran, then I can not hear any more music from the loudspeakers on the PC before loud noise. For a star deduction.