20V 4.5A 90W USB AC Adapter Battery Charger Power Supply for Lenovo ThinkPad X1 Carbon Touch Ultrabook 45N0236, 45N0237, 45N0238, 45N0239 0B46994, 0B46995, 0B46996, Output: 20V 4.5A~90W Input: 100~240V~1A 50/60Hz DC Connecter size:USB Square Connector Replacement for : 45N0236, 45N0237,0B47002, 0B47003, T440 E431,PA-1900-081 Package:One power charger +One power cord Features 100% Brand New AC ADAPTER Replacement, with 1 year warranty