About this item Qualified replacement compatible with various Chromebook models, including charger models such as kp04501017, kp0450h006, and others for Acer Aspire series. This adapter has a connector size of 3.0*1.1mm, which is smaller than the 5.5*1.7mm sizeplease verify the connector size of your original adapter before purchase. SPECIFICATION - Input: 100-240V 1.5A 50-60Hz, Output: 19V/3.42A, Power Supply: 65W, Connector: 3.0*1.1 mm Dimensions: 7.28 x 4.49 x 1.81 inches.