90W 19.5V 4.62A AC Adapter Charger for Dell Note: 1.Only work for 90W Dell laptop! 2.In order to get a correct adapter please kindly double check if your original adapter's output and connector size are the same as ours firstly. 3.If you are not sure,pls contact us by email,we would always be here. Power adapter is the source of power for the notebook computer. It is a high-quality switching power supply. Its working principle is the same as that of the switching power supply in home appliances such as color TV. Its function is to provide stable low-voltage DC power for notebook computers. Shenzhen Waweis Technology Co., Ltd is one of the adapter device manufacturers in China, Our world-class production plant passed ISO9001:2008 & ISO14001:2004 certifications and is equipped with the state-of-art technology and machines. Our products include macbook Charger , Laptop Adapter, Universal Adapter,Wireless Charger ch…