Laptop Notebook Charger for&nbsp;Lenovo ThinkPad Edge E520 (1143-3BU) Edge E520 (1143-3CU) Edge E520 (1143-3EU) Edge E520 (1143-3FU) Edge E520 (1143-3GU)&nbsp;Adapter Adaptor Power Supply (Power Cord Included) Replacement Laptop Charger US Power Cord Included Input: 100-240V Output: 20V 4.5A 90W