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The was a specialized tool designed to solve a major headache: Windows 7 does not have native support for USB 3.0. This means that on modern computers (like Intel NUCs or Skylake-based systems), your USB mouse and keyboard would stop working the moment the Windows 7 installer started.
Official download links on Intel's site are generally broken or redirected. While third-party mirrors like DriversCloud Download.it may host copies, these are not verified by Intel. Level1Techs Forums How the Utility Works
Typical workflow (step-by-step)