No interest (for my intended use)
I had chosen this device mainly for its supposed capacity, in addition to the extension of the Wifi network, to allow an ethernet connection for example for a TV.
As far as the extension of my Wifi network is concerned, I don't find any improvement, the uncovered points remain uncovered, whatever the position of the amplifier which must remain in an optimal zone in relation to the box (of course this is valid for my flat (200 m² with load-bearing walls). As for the ethernet connection, with the amplifier in the optimum zone, I find huge losses in throughput (60%), and it's much worse than my PLC sockets (which I didn't find efficient enough with 20 to 30% losses).
So I return the product.