It is fully compatible with the original HP ZBook Studio TPN-CA11 TPN-DA09 TPN-DA03 ADP-150XB BYou just need to make sure your HP 150W power adapter model number is TPN-CA11 TPN-DA09 TPN-DA03 ADP-150XB B and Connector Size: 4.5*3.0mm tip you can buy it without hesitation Please let us know via Amazon if you don't know how to choose. We will be happy to help you. (Please be sure to include your computer model and charger parameters)