Samsung Original AD-4019P 19V 2.1A 40W AC Adapter Replacement Charger For Samsung Notebook Model Numbers: Samsung NP300U1A, Samsung NP300U1A-A01US, Samsung NP305U1A, Samsung NP305U1A-A01AU, Samsung NP305U1A-A01US, Samsung NP305U1A-A02US. 100% Compatible with Samsung Part Number: AA-PA2N40L, AA-PA2N40S, AA-PA3NS40/US, AD-4019P, AD-4019W, BA44-00278A, BA44-00279A, PA-1400-14. Full One Year Warranty Worldwide compatibility: Free Voltage 100-240VAC DC Output Voltage: 19V 2.1A 40W Replacement Product, works as genuine parts, 100% Compatible with Original P/N :AD-4019P,AD-4019W 3.0mm/1.0mm