A:AnswerThe Lenovo Yoga C940-14 and the ThinkPad X1 Carbon 14 are two different and separate models. The ThinkPad a top-of-the-line business model and the Yoga C940-14 is a top-of-the-line consumer model. We recommend you review the features of the specific models you are considering and match those features to the work you want your new computer to be able to do.
A:AnswerThe Lenovo ThinkPad X280 laptop uses a 65W, USB-c AC adapter/charger like this one, there are many varieties available: https://www.bestbuy.com/site/insignia-65w-usb-c-wall-charger-black/6362822.p?skuId=6362822