Intocircuit 65W 18.5V 3.5A Laptop AC Adapter Charger for HP / Compaq Presario CQ40, Presario CQ40-100, Presario CQ40-300 Be a part of the millions of trusted Intocircuit users around the world Input: AC100-240V (worldwide use), Output: DC18.5V 3.5A 65W DC Connecter (Barrel) size: 5.0mm x 7.4mm with central smart-pin inside Please make sure the part will match your laptop. If there is no central smart-pin in the connector of your original AC Adapter, please stop bidding this item. What you can get: Intocircuit 65W Laptop AC Adapter, Power Cable(3-prong) and 1 Year Replacement Warranty