AC Doctor INC 20V 3.25A 65Watt Rectangle USB Tip Laptop AC Adapter For Lenovo ThinkPad Edge E431 E531 11e L440 L540 S431 Laptop Charger with Power Cord 65W 20V 3.25A Square Plug Shape AC 100-240V-1.5A, 50/60Hz . AC Adapter Power Charger For Lenovo ThinkPad Edge E431 E531 11e L440 L540 S431 Ideapad Y40-70 Y50-70. Connector plug shape: Rectangle USB Tip . Power Cord included. 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.