Frequency – 50~ 60Hz, AC Output – 100 ~ 240V, Output – 20V-4.5A, Compatible Model – E431,E440,E450,E450C,E460,E465,E470,E470C,E475,E531,E540,E550,E550C,E555,E560,E565,E570,E570C,E700C,E575,E455,E560P,E40-80,E41-80 ThinkPad X-series X230S,X240,X240S,X250,X260,X270,X1 Yoga,X Carbon 1st,X Carbon 2nd,X Carbon 3rd,X Carbon 4th ThinkPad S-series S2 Lenovo S-series S3 Yoga,S5 Yoga,S1 Yoga,S431,S440,S531,S540,S2-owcd15-7200u Lenovo P-series P40,P50S,P51S Lenovo Z-series Z40-70,Z40-75,Z40-Touch,Z50-70,Z50-75,Z50-Touch,Z41-70, Z70-80,Z70,Z71