Circumstances I Some of customers purchased our 3/4/6/8 puck lights kit. But they found that they needed to divide one kit into two kits because of the installation. In this situation, they will need an extra power supply. Solution I Our 12V 1.5A power adapter is for purpose of someone who need an extra power adapter for their existing under cabinet puck lights and led lights bar. Circumstances II Since the transformer was defective or broken, the customers need to replace the old one of their previous 12V DC devices. In this case, they will need to find another suitable new transformer and purchase it. Solution II It is great choice to get our 18W wall plug power adapter if someone is looking for a transformer to replace the old one of the 12V DC devices. Specifications: Input Voltage: AC 110V 50/60Hz Output Voltage: DC 12V Output Current: 1.5A Maximum Wattage: 18W Material: Plastic DC Male Barrel Connector: 5.5 X 2.1 mm Length of Power Cable: 59 inches (1.5M) Package Includes:1 Power Supply Wall Plug 1 On/Off Switch Cable Warning Notice: Please pay more attention to the max wattage and the type of power jack before you place the order with it.