IBM / Lenovo Thinkpad T420 - Genuine OEM Laptop Charger | AC Adapter
Amazon.co.jp: 20V 4.5A 90W Replacement Power Supply Connector for Lenovo ThinkPad B490 B590 X60 X200 X300 L410 L412 L420 T420S T420SI T430 and More Compatible AC Adapter Power Cable Included Hemo :