I spread the cables around my apartment and I will have the following sockets. Could someone tell me how to connect the cable at the back of this socket? maybe you have any photos, guides? has a two-part tester for RJ-45 cables.
http://www.materialyelektryczne.pl/gyszneo-komputerowe-podwojne-rj-45.html
http://www.materialyelektryczne.pl/gyszneo-komputerowe-podwojne-rj-45.html