AC Doctor INC 20V 4.5A 90Watt Rectangle USB Tip Laptop AC Adapter For Lenovo ThinkPad Edge E431 E531 11e L440 L540 S431 Laptop Charger with Power Cord 90W 20V 4.5A Square Plug shape AC 100-240V-2A, 50/60Hz . AC adapter power charger for Lenovo ThinkPad Edge E431 E531 11e L440 L540 S431. Connector plug shape: Rectangle USB Tip . Power Cord included. 90W leonvo laptop charger charger quickly. NOTE: If the output Voltage Ampere DC jack size and connector Dia. is the same as your ac adapter it can fit your computer. Please double ensure. If not it will not compatible.