Lenovo AC Adapter Power Supply with Power Cord for Lenovo Thinkpad T420 4177QJU Laptop / Notebook Pc Computer Input: AC 100-240V, 50-60Hz / Output: DC 20V 4.5A 90W DC-IN Connector Plug Type: Single Barrel, with Center Pin Item Includes: One AC Adapter and One Power Cord / Item Condition: Brand New Genuine Original Lenovo Product