7.9mm New Charger Converter Cable Adapter for Lenovo ThinkPad X1 Carbon X240 L440 T440s Erazer Z510 YOGA13 / 11 / 11S Yoga 2 Pro (Electronics)
Only 2 days Shipping time though from UK delivered! Two St. ordered for T440, with both it can be charged on an old ThinkPad. Both adapters the middle part in the round connection is not quite centrally, but the power supply can be plugged