Notebook power adapter Specification :With high efficiency and ture voltage output automatically Auto-rest to lowest voltage 5V after current interruption to protect you laptop computerIncluding eight or more connectors for use to charge voltage easily Different voltage suitable for the most notebook computers New changeable connector design ensure polarity fool proof For more information : 1.100% original quality, High power , reasonable price 2.Prompt deliver and good after-sale services3.Quality warranty for 12 months4.payment by T/T or west union5.Shipment by DHL , EMS , UPS, Fedex6.Packing, OEM pack and netural packing , design packing as your request .