If you have this specific executable file, it is a standalone installer. To ensure it "works" correctly on your system: Verify Compatibility : Right-click the Start icon and select to confirm you are running a 64-bit version of Windows. Run the Installer : Double-click the file. It will typically extract files and then launch the InstallShield Wizard Follow the Prompts

It replaces generic Windows "High Definition Audio Device" drivers with proprietary Realtek files, which often unlock higher sample rates and better signal-to-noise ratios.