Nogis Round 5.52.1mm Power Charger Tip Adapter Connector Converter For Lenovo Ideapad Yoga 11, 11s, 13, 2 Pro, Flex 14, 15 ; Lenovo ThinkPad T440S T450S Yoga Helix, x240, Carbon X1 T540P ,P/n 0b46994, 0c19868, 0b47046, 0b47048 Ultrabook From Old Universal Charging Cable Cord (Round Connector) To New Updated Lenovo Square Connector On Power Adapter With USB For Your Moblie Phone While Charging (5.52.1mm Tip Adapter Conveter With USB)