EZway&reg;20V 4.5A 90W AC Adapter Battery Charger Power Supply For Lenovo ThinkPad X1 Carbon Touch Ultrabook 45N0237 PA-1900-72 AC Input: 100 ~ 240V 50~60Hz,DC Output: 20V 4.5A 90w Power dimensions:USB Rectangular shape(pin) Replacement for part number :45N0236, 45N0237, 45N0238, 45N0239 0B46994, 0B46995 Package:One power charger +One power cord Notice:100% OEM compatible,work as original part,One year warranty!!