4-pin male to male cable many of you have been waiting for. It is ten feet long. This cable allows you to connect your DŌS to the 1LINK thereby eliminating the need for the DŌS to be connected to a power supply brick or the AquaBus cable. Just one wire! This really cleans up the wiring mess under the aquarium since just one single power brick can power two WAV pumps AND the DŌS.