Sunyear Replacement Laptop AC Adapter Power Supply Charger+Cord for Dell Vostro 1440 1445 1450 1520 1540 1550 3550 Input voltage: 100-240V ~ 1.5A, 50 - 60Hz Output voltage: 19.5v ~ 3.34A, 65Watt Size of Connector: 7.4x5.0mm item is compatible replacement If you don't see your model on the list please contact us This Product Has 12 Months Replacement Warranty