My mistake was to manipulate the reset button without knowing the commissioning. The only visual record does not seem very clear. Therefore, the devices are not appairaient, my fault. I called the customer service Devolo, and the problem was resolved immediately. Once installed, I could without my ethernet hub since we have three outputs at a adapters, and the flow is great with almost 200 Mbit / s instead of about 10Mbit / s on my boxes Freeplugs (which were perhaps failed), all measured with the free of SoftPlug LEA. Congratulations Devolo for equipment and service.