This installs all legacy DirectX 9.0c–11.0 components.
Install all "Important" updates, as these often include the Platform Update for Windows 7, which brings improved DirectX 11.1 features to the OS.
Updating DirectX on Windows 7 is less about gaining new features and more about maintaining the integrity of the "bridge" between software and hardware. By keeping the operating system patched through Windows Update and utilizing the End-User Runtime tool for legacy files, users can ensure their legacy machine continues to handle multimedia tasks with efficiency and reliability.