BZ-DC 100W This model is an univarsal switching-mode power supply for Laptap.operation at input DC voltage 12v to 16v and output DC voltage of 16v/18v/19v/20v ;output power 100watt max,with 8 pcs separate tips connector to suit to almost all laptops,select output voltage to suit to laptop and make sure the polarity of tips connect correct before use, with many protection functions use for the notebook computer,power supply by 12v car battery .the range of use :CD players,camera,laptops and other electronic devices Electronic characteristics: 1. Rated input voltage: DC12V ; Vibration input voltage range:DC 12v-16v 2. Output power :100W 3. Efficiency: >88%(TYP) 4. Output voltage:DC 16v, 18v, 19v, 20v, (0-0.8v no load) 5. USB port: 5v (0~+0.8v no load) can be used for :MOBILcharger, camera charger,MP3, MP4 and other electronic portable devices 6. Short circuit protection : YES 7. Output low voltage protection (10v) :YES 8. Line regulation:+/-5% 9. Load regulation:+/-5% 10. can provide: CE / FCC / ROHS and the Australian certification