Product feature This model is an universal switching-mode power supply for Laptop and USB port, operationat input AC 100V to 240V 47-63Hz, Output: USB:5V2A, DC 7 Voltages: 15V/16V/18V/19V/20V @6Amp, /22V/24V @5Amp max, USB port output 5V2Ampmax, output power 120 Watt max, with protection functions: Overload protection,Short Circuit Protection, power supply by mains supply. With 8PCS tip connecterto suit to main Laptops, Select output voltage to suit to Laptop and make surethe polarity of tips connect correct before use. Output voltage compatible with:18V(18.5V) 19V(19.5V) 20V(21V) producing area:China