With this individual adapter existing Powerline networks can be extended without any problem. The data is distributed in the whole house via the available power cabling. Contrary to the wireless LAN this also works over several storeys. Thus different circuits need not be considered. The Powerline individual adapter functions across all electrical circuits. At idling state it switches automatically to the power-saving mode. The individual adapter can be extended with all devolo d LAN high-speed products. An encryption can be activated for data security.