I bought this product as a supplement to an existing installation from the Devolo 500 series. Really handy is the built-in three-port switch, so you can often save the expense of an external switch for which you indeed occupies a socket outlet connection again normally. It is important that you follow the instructions given in the installation manual Note to put the Devolo adapter directly into the wall socket and not in a connected thereto triple socket with an extension cord. This improves the performance of compound enormous. For the performance in general has to be said that the specified up to 500 Mb / s represents a manufacturer's dream. In practice, one comes to values between 100Mb / s and 150Mb / s, but the very stable. The net performance is much better than on a wireless network with 300Mb / s, because there rows occur packet loss and thus retries. A creeping loss of performance for longer data transmissions that are reported from other customers, so far I could not identify. I use the latest firmware 5.2.3.