This model is an universal switching-mode power supply for Laptop and USB, operates at input AC100V to 240V 47-63Hz, rated input AC 120V-230V, 50-60HZ; output USB port:5V@2A max, DC 7 Voltages: 15V/16V/18V/19V/20V @ 6Amp max, 22V/24V @ 5Amp max output power 120 Watt max, with protection functions: overload protection,short circuit protection,power supply by mains supply, with 8PCS tip connecter to suit to almost laptops,select output voltage to suit to laptop and make sure the polarity of tipsonnect correct before use.