Power4Laptops Power Supplies have overvoltage and overcurrent protection circuits built in, this means if you get a power surge a circuit in the power supply will blow before it damages your equipment. Our Power Supplies have also had Electrical Safety Assessment Tests conducted on them in the UK and have a valid CE Certificate which authorises them for safe use in the EU. Power4Laptops Branded Replacement Charger - Unlike cheaper Power Supplies, Power4Laptops products are Electrical Safety Tested in the UK and CE Certified to guarantee your safety Overvoltage and Overcurrent Protection Circuits built in - In the event of a power surge the Power Supply will blow before it damages your equipment. Output Voltage: 19V Output Amperage: 4.74A Plug Size: 7.4mm X 5.0mm (HP Centre Pin) Brand Power4Laptops Color Black Wattage 90.00 Amperage 4.74 Amps Portable No Item Weight 368 Grams Manufacturer Power4Laptops Model Number 1610006C