The installation was easy. And then encrypt and wait until all the adapter stop flashing plugging new, that's it. The only thing that bothered me a bit was that I had to pull it immediately after installing the latest adapter, since it was not automatically recognized by Devolo Cockpit and for searching the net required security code is printed on the back. But that's just a minor thing.
Due to the good performance enhancement, there are of me 5 stars.
Just a note: My house is built in 1983 and completely wired with three wires. And I let the rooms that I have networked with Powerline, put by an electrician in the same phase. That's what I said to begin at use the 500 Netgear devices made. The already had brought about a factor of 1.5 compared to different stages for each adapter.