No fuss power supply replacement solution. No voltage switch to worry about or knock! Simply select the correct plug to suit the specific type of laptop.This power-pack automatically determines the correct voltage required and regulates constant supply for powering and charging. Intelligent power for smart people! 
 
90W MULTI-VOLTAGE High efficency switch-mode with low stand-by power drain LCD display of voltage output. Voltage selected depends on plug Max. Current relative to voltage PLUS! 5V USB POWER SOCKET Charging & Running USB devices Plus mobile phones, and more! KIT WITH TEN PLUGS Includes Plugs A-H, J, K Suits most popular laptops. More available