New HP Charger Replacement AC Adaptor -19V - 4.74A - 90W - Black Colour and Tip Size - 7.4mm/5.0mm (Middle Pin) Compatible Model number ProBook 4435s, Compaq PRESARIO CQ35-300, Compaq 430, HP ProBook 6570B, Compaq PRESARIO B1210, HP 610, Compaq PRE for Probook 450 G2 Probook 4540s Product Number: AD-HP1947-7450