T450 not DETECT 2nd screen after upgrade Win10

I upgraded today to win 8.1 to Win10. My T450 has a second screen (Dell, about 5-6 years) connected via a docking station Thinkpad USB. Second screen worked well under 8.1, but now it is not detected. I've improved the display drivers (graphics are Intel 5500) and Bios but no joy so far.

Any help much appreciated!


Sorted! Solution has been updated to the drivers for the USB docking station, can be found here:


Tags: ThinkPad Notebooks

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