I had problems: build a fast and stable network wifi in our house. We have 5 PC's distributed as a family in the house, all of which run on a Fritz box in the cellar. The Devolo adapter which is now connected to the first floor sends, stronger than the Fritz box, which is in the basement, and the two floors. The pity is that you can not integrate the small Devolo plug into the system. Conclusion: I highly recommend the unit!