Which Directx version is supported by Unreal Engine?

I need Unreal Engine latest version that can run on Dirextx Version 10.0. I have tried the latest version UE 4.21 but it need Directx version > 10.0 . I need latest Directx 10.0 supported version.

I believe that UE4 only supported 11 DX and OpenGL on launch. so you would have to go to UE3 (which I don’t believe is publicly downloadable anymore)