USB-C Monitor not working


I want to connect a Monitor/Dockingstation via USB-C. Made several tries with a Lenovo Dock and a Vinpok Split. All are working well on other Windows 10 Lenovo Laptops and Mac’s.
With the MiniBook I got a connection/screen with Ubuntu Mate Live Stick but not with Windows 10.
I read something about USB-C “Alt-Mode” but I didn’t find drivers or something similar. How to find out which USB-C capabilitys the MiniBook has.