HP Z VR Backpack G1 Workstation Quadro P5200 - Unsupported Graphics Card

Hi, I have the Backpack from HP with a Quadro P5200 Graphic Card.
I want to evaluate the Unreal Studio.
When i start the Epic Games Launcher i get the Message “Unsupported Graphics Card” !
I have installed the latest Driver from HP 388.73 downloaded from their Support website.
What is going wrong ?
Thanks a lot for every help or tips.