his portable, ThinkPad 65 W slim adapter ensures you need never be without access to power. The ThinkPad 65 W AC adapter is compatible with post-2013 Lenovo notebooks with a rectangular “slim-tip” common power plug. The compact design performs to the same specifications as the standard AC adapters supplied with the notebooks. Each one is energy efficient with Energy Star V (ES 2.0) technology and is protected by a one-year limited warranty with Lenovo.- Slim, flat design - System building block accessory that performs to the same specifications as the standard AC adapter that ships with the notebooks. - Energy efficient with Energy Star V (ES 2.0) - Compatible with 2013 Lenovo notebooks with rectangular “slim tip” common power plug - Not compatible with legacy notebook systems with the round, barrel-type power plug