This is a HP 65W AC Adapter. This item has HP part number 519329-002, and has HP spare part number 519329-002. Specifications Manufacturer Part Number: 519329-002 Manufacturer: HP Device Type: AC Adapter Input: 100 to 240 VAC Input frequency range: 50 ~ 60Hz Input Current: 1.7A Power: 65W Output Current: 3.5A Output Voltage: 18.5 Connector: 3 pin-grounded mates Color: Black Connector: 7.4 mm Barrel Connector/7.4mm 5.0 mm