Hello, I´m from Germany, so sorry for my bad English

I´m looking for a driver for my Windows Server 2012 machine.
I like to use
this device on
this Homeserver with Windows Server 2012 Standard.
I downloaded the newest driver for Windows Vista, 7, 8 etc. from displaylink.com and he let me install this driver, but after a restart, Windows showed me a speechbubble with an announce, that this is an unsupportet driver.
Then, I tried the beta driver for WMS2012 from OSBASE - I was able to install this driver too (after I uninstalled the other driver and after a restart) and Windows don´t show me any message, so I thinked, that this work, but it does not work

Windows only shows me one Monitor over the internal graphicscard and not the other Monitor, I plugged over my external graphicscard...
Can you help me? Is there a solution for Win Server 2012???
Thank you,
Thomas