aspectLED offers a full line of constant voltage LED power supplies (drivers). A high quality constant voltage power supply/transformer results in your LED lights using less energy, shining brighter, and lasting longer. That's why aspectLED offers the highest quality LED power supplies. All of our power supplies are energy efficient and eco friendly. Our power supplies feature flexible input voltage (100-265VAC) and can be ordered in 12VDC or 24VDC outputs. Wattage displayed is the Maximum Wattage. These power supplies are rated to run at 80% continuous wattage or 120 Watts continuous. To accommodate a wide variety of installation methods and applications, this power supply is manufactured with more than one output wire lead. These are not necessarily required for every application. If your installation only requires one of the output wire leads, please separately cap the unwanted leads using wire nuts and/or electrical tape (take care to make sure the positive and negative wires do not touch each other! This will cause an electrical short and damage your power supply). Each output lead is pulling from the same source, for example a 150 Watt supply with two leads can still only give a total of 150 Watts whether you use one or both output leads.