Displaylink 8.0 and Windows Anniversary limitation
 

Had Displaylink working great prior to upgrade to Win10 Ann. edition. Now can only get one of the monitors to work. If I plug in a second USB monitor , it disables one of the DVI monitors and forces all monitors to mirror each other. Used the cleanup tool and reinstalled, but didn't fix. Very sad :(

Never heard of that.
But it's not up to DisplayLink driver to decide the layout. This is a Windows feature and we would fail driver qualification if we were interfering with it.

Could you have a look at the Windows Display Panel (right click on the desktop, then click on screen resolution). Can you change to Extend?

I find the following article very useful for this: http://www.tenforums.com/tutorials/2...dows-10-a.html