Input: 100-240V 50-60Hz 1.8A, Output: 18.5V 3.5A 65W Connector Size: External diameter: 7.4 mm,Interior diameter: 5.0 mm;(Please make sure the connector size is the same as the original one!) Compatible HP EliteBook 720 725 740 745 755 810 820 840 850 G1 G2; HP ProBook 430 440 450 455 G1 G2; 640 645 650 655 G1; Hp Probook 4430s 4440s 4520s 4530s 4540s 4510s 4720s 6360b 6460b 6470b 6550b 6560b 6570b Package: 1x Ac Power adapter & 1x Ac power cable/Charging cord,100% Brand new. Note: return windows will close after one month, dont worry about it, you can click on seller store on right corner ask a question and contact seller directly for 12 month warranty.