Input: AC 100-240V 50-60Hz; Output: DC 20V 3.25A 65W; Connector size: 5.5*2.5mm (Note: Please make sure the DC output and tip size of ac adapter are accordant before you buy) Fit Laptop Models: for Lenovo B460 B550 B560 B570-1068B3U B575 B575-1450A5U G460 G460 06772 G470 G555-087374U G570-4334 G570-4334EEU G570-4334EGU G575-4383 G770-1037 Z360