I have the USB-C ULTCTL which I have successfully used with my DELL Latitude laptop to drive 2 displays.
I have tried using it with my work Lenovo Thinkpad but it will only drive one monitor which must be plugged into the 4K HDMI port.
I have followed the guidance in one of the forum topics to uninstall the driver, clean the PC and re-install all to no avail.
I cannot understand why all it works with the DELL but not the Thinkpad.
The only thing I can think of is that the DELL is running an old driver(9.3.3324.0) whilst the Thinkpad is running the latest driver.
Any help would be appreciated.