New HP Charger Replacement AC Adaptor -18.5V - 3.5A - 65W - Black Colour and Tip Size - 4.8mm/1.7mm Compatible Model number 6820S, HP 6745B, HP 6735S, HP 6735B, HP 6730S, HP 6730B, HP 6830S, HP 6720S, HP ProBook 440 G2, HP 6720T, HP 510, HP Compaq Product Number: AD-HP1835-4817