HP 135W electric adapter. . .Current: Works on 110 to 240 Volts. .Output Voltage 19V - Output Current 7.1A . .Frequency: 50-60 Hz .Protection system resistant to voltage and current surges. . Purchase of the adapter: Backup adapter. . Invoice: Available. . Details are in the pictures. . .Replies are limited to private messages on the site, and I thank everyone for their understanding. . . Product details: . Lenovo ThinkPad 170 Watt AC Adapter (Slim Tip) Lenovo Power Adapter 110-240 Volts, .Output: 19V, 7.1A. . .Frequency: 50-60Hz. . .Surge Protector. . kindly refer to the images below. . Invoice: Available . .