The USB 2.0 Audio Adapter Pro provides either an analogue or optical audio output, via your computer\'s USB port. Perfect for gaming, watching movies, listening to music or for Skype and other Voice over IP applications, the Audio Adapter Pro features dedicated buttons to adjust the volume or mute the headphone or microphone. The supplied software allows Windows users to manage equaliser, mixer, environment settings and virtual speaker positioning for total sound control of the virtual 7.1 channel surround sound feature.