Hi All, I got the Plugable UGA-4kHDMI working with MBP M1 11.5.1 using display link 1.4 driver!!! I have 2 LG 4K monitor, one connected through Caldigit TS3 with Display Port (Vertical Rotation) at 4K, and another one using the Plugable HDMI adapter also at 4K. Hope it help u guys.

I am having a similar problem. I am using a Startech USB32HD4K. I have tried 1.4 and the 1.5 beta. The second monitor is simply not recognised on my M1 MBP.

However, I also have a Mac Mini, and the display is immediately recognised with it.

Dear users,

Thank you for posting on our forum.

As we are unable to analyze the issue without log files I would like to encourage you to gather them by using this guide.

The best way is to send your issue description and log files to our email address: technical-enquiries@synaptics.com as there we are able to treat each user's case separately.

Of course you may also attach them here on the forum but the analysis may take more time.

Kind regards,
Jakub