Super Power Supply 7.4mm Diameter Lenovo Tip Adapter Connector Converter for Lenovo Essential/Ideapad to Lenovo Ideapad Yoga 11, 11s, 13, 2 Pro, Flex 14, 15 ; Lenovo ThinkPad Helix, x240, Carbon X1 Includes 1 x Tip Adapter Warranty: 1 Year Super Power Supply are manufactured and tested to match or exceed OEM products. Trademarked by Super Power Supply. Sold exclusively by Super Power Supply