Billion BiPAC P104 HomePlug AV 200

A power-line network like the BiPAC P104 could be just what you're looking for if your home network is cursed by WiFi blindspots, and trailing Ethernet cables around the house isn't an option. All you need is two spare electrical sockets and a power-line networking system such as Billion's BiPAC P104 HomePlug AV 200 Ethernet Adapter Starter Kit. By connecting your computers and/or router to the mains using the two supplied Ethernet adaptors, data is streamed over your home's electrical wiring, giving you an always-on network with the convenience of WiFi and the reliability of Ethernet. Theoretical limit BiPAC P104 conforms to the HomePlug AV standard, so it can achieve theoretical speeds of up to 200Mbits/sec, real-world running speeds are unlikely to come close to this. It's also compatible with other brands of power-line network adaptors conforming to the HomePlug AV standard, so you can mix brands on the same network. Setting up is easy – just plug in and you're automatically connected.  ... (link)