Amazon.co.jp: DAISEITECH 20V 3.25A 65W AC Adapter for Lenovo Lenovo Replacement ThinkPad X240 X250 IdeaPad Yoga Power Supply 2 Pin PSE Certified by DELTA [Not Compatible with 2017 and Later X1 Carbon
Lenovo ThinkPad X240 (20AM) original ac-adapter 90 Watt - sparepartworld.com
Amazon.co.jp: LENOVO ThinkPad X240 Power Adapter 20.0 V 4.50 A Laptop Charger 90 W [High Power] [Fast Charging] AC Adapter Power Cable Included [PSE Certified] [Akira M] : Computers