Note: Please pay attention to the power specifications. This item is a high-quality power supply. It is ideal as a replacement or secondary device and provides power to your DELL LATITUDE E6440 just like your standard power supply, enabling reliable battery charging. Note: Unless we explicitly state that this is an original product, we are supplying a compatible product. This means it is by no means an original product from the manufacturer and is therefore not produced or endorsed by them. All brand and product names are the property of their respective owners and are used solely for compatibility description.