-
×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center.
-
×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center.
- HP Community
- Notebooks
- Notebook Software and How To Questions
- Who Me Too'd this topic

Create an account on the HP Community to personalize your profile and ask a question
12-07-2017 11:40 PM
I have a newly released HP Spectre x360 with an i7-8550U CPU and Thunderbolt 3. The documentation for my specific model (13-ae052nr) as well as the Thunderbolt 3 support indicate that DisplayPort Alternate Mode should be supported.
I've tried several different USB-C to DisplayPort adapters and none of them are correctly recognized:
Cable Matters USB-C to DisplayPort 4K 60Hz Adapter
UPTab USB-C (Type-C) to DisplayPort++ Active Adapter
When viewing them in Device Manager they show up as "Billboard Interface" devices and/or "Unknown USB device (Port Reset Failed)".
The devices are plugged directly into the Thunderbolt 3 ports on the laptop. I've got the latest drivers according to HP Support Assistant (I've manually verified Thunderbolt/Display drivers are the latest) and I've also got a fully updated version of Windows 10. I've tried uninstalling the USB devices and rediscovering them. I've tried restarting the machine with them plugged in.
Any ideas or suggestion on why these adapters are not working/being recognized by the system and what can be done to resolve this?