Please check compatibility with your laptop carefully as laptop models do vary.Ensure you have the correct Tip Size, Output Voltage and Amp Rating from your previous charger.The AC power adapter enables you to operate your laptop or charge the battery from electrical power outlets.If you are running your computer on AC power with a battery installed, the adapter charges the battery ( if needed ) and maintains its charge.Tip Size: 5.5 x 3.0mm TipOutput: 19V 2.1AUK Three-Pin Plug Power CordFit for models :AD-4019, ADP-40MH, CPA-40-012A, A04R005L, Samsung ad-4019, Samsung NC10, Samsung NC20, Samsung ND10, Samsung ND20, Samsung N110, Samsung N120, Samsung N130, Samsung ND10 series, Samsung ND20 series, Samsung NC10 series, Samsung NC20 series, Samsung N110 series, Samsung N120 series, Samsung N130 seriesPlease check compatibility with your laptop carefully as laptop models do vary.