The ThinkPad 170W AC Adapter for W520 (0A36227* - United States) offers power for selected ThinkPad laptops. Features include:\n- Plugs into available wall outlet to deliver AC power to your ThinkPad laptop and to recharge the system battery\n- Offers the same specifications as the standard AC adapter that ships with the ThinkPad laptop\n\nNote: ThinkPad 170W AC Adapter for W520 varies by country. Service parts has a listing of the various country part numbers.\n\nPerformance specifications:\n\n- AC type: Universal Input, Worldwide Agency Support\n- AC input voltage: 100 V to 240 V; 50/60 Hz\n- Input connection: Includes standard AC power cord\n- AC power cord length: 1.0 m (39.4 in)