Benefits:
easy installation
2xLAN cable here
(Almost) silent
unused outlet remains usable (for power strips, etc.
Disadvantage:
the adapters are approximately 3cm away from the wall, so if you have space problems can also with an extension cable (2m) from socket to manage adapter.
In addition, the adapter I had first had another drawback:
Spulenfiepen !! It was so loud that it even the operating noise of my PC drowned (according devolo a production error), the exchange of goods was then almost inaudibly.
Nevertheless:
Who does not want to meter and complicated cable laying, is well served by the devolo Starter Kit.