This item is a high-quality power supply. It is ideal as a replacement or secondary device and provides power to your Hewlett-Packard ProBook 4740s just like your standard power supply, enabling reliable battery charging. Note: Unless we explicitly state that this is an original product, we supply a compatible product. This means it is by no means an original product from the manufacturer and is therefore not produced or recommended by them. All brand and product names belong to their respective owners and are used solely for compatibility description.