About this item Input: 100-240V 50-60Hz Output: 20V 3.25A 65W / 20V 2.25A 45W Inner diameter Yellow square USB tip with Pin Inside, please refer to the picture! Compatible laptop models: Replacement for Lenovo G40 series (G40-30, G40-45, G40-70, G40-80), Z40 series (Z40-70, Z40-75), Z70 series (Z70-80), Y50 series (Y50-70), G400S, G410, G500S, G505S, G510S, S410P, S510P, E440, E450, E460, E550, E560, X1, X270, L460, L440, X240, X240s, X250, L540, as well as Lenovo Flex 2 and 3. Compatible P/N: Replacement for Lenovo ADP-65FD B, PA-1650-72, ADLX65NDT3A, 0A36258, ADLX65NLC3A, ADLX65NDC3A, ADLX65SLC2A. Also compatible with Lenovo ThinkPad X1 Carbon (2nd, 3rd, 4th Generation) and ThinkPad X1 Yoga (1st Gen). Dimensions: 6.9 x 4.9 x 1 inches.