AC ADAPTER WITH USB - Design a USB-A (5V 1A) charging port on the bottom of the power adapter, you don't loose the outlet plugging this in when charger phone. Flexible and simple to use ADJUSTABLE DC POWER CHARGER - The switch power supply (wall wart) is easy to adjust the output voltage using the included key. DC Output: 6volt, 9volt, 12volt, 15volt,18volt, 20volt, 24volt, 41 Watts, 1.5A Max BACK UP POWER SUPPLY FOR HOME - Replace a lost or broken charger, it's a great backup power cord, wonderful to use on devices when you lost the cables. Perfectly replace for 18W (6V 3A), 27W (9V 3A), 36W (12V 3A), 36W (15V 2.4A), 36W (18V 2A), 36W (20V 1.8A), 36W (24V 1.5A) AC/DC adapters 9 different size connectors in one, reduced energy consumption and avoid wasting money. Our power charger complies with VI Level Energy Efficiency. Average 90% energy conversion efficiency This upgraded 15 volt power supply with 8 replaceable plugs, Original DC Jack size: 5.5mm x 2.1mm. DC Plug