Hipower AC Power Adapter Charger For HP Probook 4440S, 4540S, 4545S, 6470, 6470B, 6475, 6475B, 6570, 6570B, B5P13UT, B5P14UT, B5P17UT, B5P18UT, B5P19UT, B5P20UT, B5P33UT Laptop Notebook Computers Input: 100-240V 50/60Hz worldwide power compatible Output Volts: 19.00V Output Wattage: up to 90W maximum Output Current: up to 4.74A maximum Connector: Barrel With Center Pin