Connect your UCL under cabinet panel lights to your 12V power supply in seconds with the AQUPANLKADCA. The DC jack connects to your plug-in transformer and the 2-pin connector attaches to the first AQUC-UCL panel light, supplying power to the whole connected lighting run. The design of the 2-pin adapter ensures that the system can only be wired in the correct way. (Length = 9.5")