I bought the kit to connect my new Panasonic TV to my router to be able to use the Viera Connect facilities and also to implement the Media Server function. In less than 5 minutes from opening the box the device was in use. To set the passwords was a little bit more tricky but the TP-Link web site has the necessary easy to follow guide.
My two devices are on different floors but on the same ring. Each device is plugged into an extension lead without apparent signal loss.
Works a treat. Fast enough to stream HD BBC iPlayer without problems.
I would thoroughly recommend to anyone looking to install a network connection without the hassle of installing new cables and for whom a wireless solution is not viable.