Interface Active Hub

The Aquatronica Active Hub allows the connection of further
  Aquatronica accessories to the control systems if all the connectors on the
  power strips have already been used for other connections. The Aquatronica
  Active Hub consists of 6 connectors for data transmission (data BUS) and a
  power jack for connecting its 12V power supply. The power supply provided is
  compatible with all standards existing on the market.