Speed default they break any records, but there are more than adequate for our ADSL connection, or much faster. There is no bottleneck in the system, unless of course the transmission over the electricity grid view. Since they can not be so fast, there is an additional way and the costs minimal ping time (about -2). From DL speed but no difference is practically determine compared when the PC would be connected directly to the router.
Those who still have the old blue devolo, can safely access here. 100% compatible.