Improves the dLAN, but no miracles hope

The installation must be done by a specialist (electrician), which once expensive for me as a layman the thing. But in my view worth it - even with my old DEVOLO 85 - plugs came now 1 floor Located at 11 Mbit / S from the router (Internet speed) on. Previously, only about 6 Mbit / s was possible throughout the house.
The new Netgear 200 plug Netgear Powerline AV + Adapter 200Mbps kit (network adapters) is now (29 Mbit / s) as to the Internet, as if everything were connected directly to the router - even my "problem child" in the attic. Here was also previously with the 200 connector only 6 Mbit / s extract. However, the Netgear software indicates that the connection between my adapter in the 1st floor with 10 MBit / s communicating with the attic - there probably dampens something on the line.
The connecting cables of the product are a bit short, the electrician had to "renew".

In addition, care should be taken, the dLAN adapter to plug in a single socket outlet - because other devices can interfere enormously. In the description of the phase coupler is found to note the attached surge power strips can even elsewhere in the house mains impair the function strong. Always turn off once the So connection problems "interference sources" and the DLAN plug whenever possible directly (and separately) inserted into the socket.