Download the latest driver, firmware, and software for your HP USB-C to HDMI 2.0.This is HP's official website to download drivers free of cost for your HP.
Hi Jane, To clarify, what type of adapter are you trying to use? Most adapters nowadays have their own software which allows your computer to communicate with them. You don't normally need to modify or add other software to make it work. For other ways to connect your Surface to an external display, here's one good resource for you to review: We're here if you need more help or if you have other questions or concerns. If you think this was useful, you may 'mark it as answer' to help those who are facing the same problem.