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HP USB C to HDMI Adaptor Issues

Microsoft Windows 10 (64-bit)

My HP USB C to HDMI adaptor isn't working properly on my Windows laptop, Mac or Huawei Mate20 Pro. (All these devices support ALT mode)

product information

Sometimes, no sound is outputted and sometimes there is no picture. I have tried it with multiple TVs and HDMI cables. Occasionally, the HDMI part becomes very warm to touch.

Usually these problems are resolved by unplugging the dongle and turning it upside down even though it is a reversible USB C connector.

I cannot contact HP Support because the website says the serial number is not recognised.


Also, I have tried to update the firmware  using this ( but it said:

HDMI Adaptor.jpg


In addition, I sometimes get this error message with the adaptor on my phone:

Huawei Mate20 Pro USB C to HDMI Cable Error.jpg


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HP USB C to HDMI Adaptor Issues


I have brought your issue to the attention of an appropriate team within HP. They will likely request information from you in order to look up your case details or product serial number. Please look for a private message from an identified HP contact. Additionally, keep in mind not to publicly post personal information (serial numbers and case details).
If you are unfamiliar with how the Community's private message capability works, you can learn about that here.
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