Upgrade to digital 5.1 surround sound on low-profile desktop systems * Includes spare full height bracket for standard size chassis * S/PDIF optical output provides true 5.1-ch sound (* Requires DVD playback software, S/PDIF decoder, Toslink fiber optic cable and 5.1-ch speakers) * High-definition 5.1 channel surround sound transforms your PC into a home theater system * Perfect audio upgrade for DVD playback, listening to MP3 or other music, gaming, and more! * Reduces unwanted static and noises from D/A processing * Easily control your multimedia output by using the integrated volume-up, volume-down, speaker mute and microphone mute buttons * CD and aux input (MPC3) * Internal Digital output via 2-pin, Molex connector * Universal PCI interface enables this board to be installed in PCI-X slots