HDMI USB-C Adapter not recognized

Hi all,

I have an XPS 13 9370. I just got an HDMI-to-USB-C adapter, but it doesn't work with this laptop. It is only recognized as a "BillBoard Device" under Windows Device manager. I have spent all my afternoon trying solutions from other posts and the internet, but no luck:

- BIOS and drivers are all up to date (via SupportAssist).

- The adapter works fine with my girlfriend's XPS 13 9360, so it is not the cable.

- A different HDMI adapter works fine with my laptop, so it is not the laptop.

- I have tried disabling thunderbolt security in the BIOS.

It's very frustrating that it works with a laptop that is just one year older model (2017 vs 2018). I've run out of things to try. Does anyone have any ideas?

This is the problematic adaptor: https://www.assmann.com/en/products/computer-and-office-accessories/computer-accessories/usb-components-and-accessories/graphics-adapter/da-70836/

This is the one that works: https://www.amazon.com/Satechi-Aluminum-Multi-Port-Adapter-Charging/dp/B01J4BO0RO?th=1

Thank you,

Luis