Please pay attention to the performance. This item is a high-quality power supply. It is ideally suited as a replacement or secondary device and provides power to your Lenovo ThinkPad X1 Carbon just like your conventional power supply, enabling reliable battery charging. Note: If we do not explicitly state that this is an original product, we will supply a compatible product. This means it is by no means an original product from the manufacturer and is therefore not made or recommended by them. All brand and product names are the property of their respective owners and are used only for compatibility description.