Go to Amazon.com : http://www.amazon.com/gp/product/B00NH1ED4S?tag=theatrecat-20 <br /> <br />HP ProBook 450 G2 Compatible Laptop Power AC Adapter Charger <br /> <br />Input Voltage 100V-240V 5060hz <br />Output Voltage 19V <br />Output Amperage 474A <br />Plug Size 74mm X 50mm HP Centre Pin <br />Power4Laptops Branded Replacement AC Adapter
