Super Power Supply AC / DC Laptop Adapter Charger Cord for Lenovo IdeaPad Flex 14, 15, 15D, 20309; ThinkPad Helix 36984MU 36984SU 36984UU 36984RU 36984LU; ThinkPad Carbon Ultrabook X1 Type 20A7, 3444CUU, 3444F9U 3444AZU 3444B7U 3444G7U 3444B8U 3444F8U 344425U Netbook Notebook Battery Plug Input: 110-220V Output: 20V 4.5A 90W 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