SIIG's Sound Wave 5.1 PCI is the most cost-effective solution to transform your PC into a home theater system improving your music, gaming and movie entertainment quality. This high performance PCI sound card offers digital 5.1 channel audio to improve your music listening quality, supports the latest 3D positional audio that is perfect for PC games running with realistic 3D sound effect, and provides immersive surround sound quality to make blockbuster movies entertainment available at home. It also features an MIDI interface/Game port to work with legacy gaming device for older operating systems. The Sound Wave 5.1 PCI is fully compatible with a wide variety of Windows operating systems. It is also FCC and CE regulatory approved, RoHS-compliant and backed by SIIG's limited 5-year warranty.