I previously had osbase installed, but removed it following your initial device. I can confirm I’m not using any other USB display / adapter.
I’ve included (in the attached doc) a screenshot from device manager showing the display drivers and USB drivers.
It’s not even showing ‚connected display off“ any more.. it just simply won’t connect at all (note: it has definitely previously worked as I had the guy from Monitors Anywhere initially giving me advice about this and remoted into my computer to try to set up. That has since expired but now for some reason I can’t even connect to the monitors.
Note: the screens are not symmetrical, what is the impact of this (if any)?