Realtek High Definition Audio -hda- Version R2.8x -9239.1- Whql May 2026

Realtek High Definition Audio is a widely used audio driver package that enables modern PC sound hardware to deliver multichannel, high-fidelity audio to speakers and headsets. The driver communicates between the Windows operating system and the sound codec on the motherboard or sound card, translating digital audio streams into analog signals (and vice versa for microphones) while exposing features like sample-rate conversion, hardware volume control, and jack sensing.