Power Specs: Connector Size: 4.0*1.7MM; Output Max: 20V 3.25A 65W/20V 2.25A 45W; Input Volt Range: 110-240V/50/60Hz (For Worldwide Use) fit for Lenovo 65 w 45 w Charger Laptop AC Adapter Power Replacement; our adapters are in compliance with top industry standards, Certificated with UL/CE/FCC/RoHS standard. We guarantee our products will charge your device as efficiently as the original charger.