This model is a universal switching- mode power adapter for laptops. Operation at input AC100V to 265V~47-63Hz, output: USB port: 5V 2A max. DC 7Voltages: 12V/15V/16V/18V/19V/20V 4.5A, 24V 3.75A. Output power 90 watt max. Protection functions: Overload Protection, Short Circuit Protection. With 8 tips to suit most of major brand laptops. Select output voltage to suit to laptop before use.