Directx Portable [upd]

DirectX is a fundamental set of components in Windows that allows software—primarily games and video applications—to work directly with your video and audio hardware. Traditionally, DirectX is deeply integrated into the Windows operating system, making it non-portable.

This is the only true "Portable DirectX." Install Windows 10/11 LTSC on a high-speed external SSD (Samsung T7 or similar). Boot your entire OS from that drive. directx portable