Product operational in x4 configuration
I bought this extension of 2 TP-LINK PLC sockets to complete an existing installation of 2 existing PLC sockets (same model), on several floors of a house. Overall, it works very well, even if you sometimes have to reset one of the PLC sockets. For the price, I'm very satisfied. I use my computer to share the Wifi connection, which is cheaper than using powerline sockets that transmit Wifi.