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 Toshiba 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:5.5mm X 2.5mmOutput: 19V 4.74AUK Three-Pin Plug Power CordSuitable for the following models:Toshiba 19V 4.74A charger p/n: PA3516U-1ACA, PA3716E-1AC3, PA3165E-1ACA, PA5035U-1ACA, ADP-90SB, Toshiba Satellite C50, L50, P50T, Toshiba Satellite Pro C50, Toshiba Satellite Pro C70, Toshiba Satellite Pro L300D, L500, L550, L850, L870, P300, Toshiba Satellite S70, S70T Please check compatibility with your laptop carefully as laptop models do vary.