MUST READ BEFORE PURCHASE: The way to buy right power supply adapter is to correctly match output Voltage(V), Amps(A) & connector size/type. Exactly same model number power adapter can have different size dc connector so always check pin size first or contact the seller for confirmation. A hard copy of the Invoice will be included in your package. Make sure your shipping address is 100% correct or updated before placing any new Amazon order otherwise the fee already spent on postage will be non refundable. Finally always buy genuine quality branded adapters to avoid any inconvenience or displeasure later instead buying cheap non branded generic replacement models or fake versions which look same do not last very long and could be safety hazard. Thanks for your time reading the information.