Original Lenovo E47 G470 G570 G475 G575 G770 K47 20v 4.5a 90w Charger Ac Adapter Genuine Original Lenovo Charger Ac Adapter Input Voltage: 100-240V Ac, 50 - 60HzOutput Voltage: 20V, 4.5A, 90W Condition: New, Original Equivalent Part, Brand New In Bulk Package The Size Of The Connector Could Be 5.5*2.5mm Come With US Power Cord