Belkin Powerline CPL AV through the mains network transmission ?

If you can’t get enough speed from your wireless router internet connection or you can’t get a signal at all here’s a solution. This master power adaptor is plugged into a suitable mains plug socket beside the router and connects to any free port available on the router via one of the supplied Ethernet cables. One of the two, supplied, client power adaptor is plugged into a main socket beside the PC/laptop? Mac and connected to the modem/network socket on your device and your PC or laptop or MAC using the supplied Ethernet cable. The two or three devices will see each other and you will get network or internet access over your existing internet connection. No cabling required. 300m max distance between devices. Secure. Simple. Comes complete with master and two client devices, 3 Ethernet cables and manual disk. Cost 100