Sunydeal AC Adapter 65W Charger Replacement for Dell Inspiron 14 (3437) 15 (7537) 15R (5537) 17 (3737) (7737) 17R (5737) 12 (7204) 14 (7404), Latitude 3330 3340 3540 E5440 E5450 E5550 E6440 Size of Connector: 7.4 x 5.0mm - Connector: round but not octagon Input voltage: 100-240V - 1.5A, 50 - 60Hz - Output voltage: 19.5v - 3.34A, 65W Package: 1x AC Adapter & 1x 2-Prong Power Cord Condition:100% compatible, 12 months replacement warranty Safe To Use: Supports Over-Charged, Over-Discharged, Over-Voltage, Over-Current And Short Circuit Protections, Perfectly Protects Your Digital Devices From Charging Accident