C2G/Cables to Go 22327 USB 5.1 Audio Adapter Perfect for streaming analog or digital audio from your PC to your audio output device Connects via Toslink for digital audio and 3.5mm for analog audio output Provides full Dolby Digital or DTS Surround Sound when connected via S/PDIF (Toslink) Simple, plug-and-play USB installation Use with your computer's DVD player to provide Surround Sound while watching movies on your home theater system