This model is an universal switching-mode power supply for laptop, operates at input ac 100v to 240v, 47-63 hz, rated input ac 120v-230v, 50hz-60hz; output 7 dc 7voltages: 12v/15v @ 4a max, 16v/18v/19v/20v @ 3.5a max, 24v @ 2.9a max output power 70 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 voltage to suit to laptop and make sure the polarity of tips connect correct before use.
