Not being an expert on everything, I could not explain that the installation I made. I received the box with top part "Finally the internet everywhere," I connected the first adapter to the box and then the second one floor above a wall socket all there is more banal, expected that small lights stabilize, connected my laptop to this jack via an ethernet jack and presto: it works and very well! The transfer of flows seems only fair. Conclusion: it works and it's really handy! Much more than we fear losing wifi network from time to time. Price is important, however, but the service made it all so much! I'll add compared to my previous comment that these adapters allow to keep a free decision, which is not a detail.
