The Realtek ALC661 is an audio codec commonly integrated into motherboards, providing high-quality sound for desktop systems. To ensure optimal performance, users need compatible sound drivers for their operating systems. Realtek provides ALC661 sound drivers for Windows 11, 10, 8.1, 8, and 7. These drivers facilitate communication between the operating system and the ALC661, enabling features like surround sound, equalization, and audio customization. Users can download and install these drivers from the Realtek website to guarantee seamless audio functionality. Keeping drivers up-to-date is crucial for resolving compatibility issues and unlocking the full potential of the Realtek ALC661 audio chipset on Windows systems.