The USB 5.1 Channel Audio Adapter that provides an amazing audio accessory for any computer with a USB port. It is equipped with standard input and output connectors to add great stereo input and output performance. The USB 5.1 Channel Audio Adapter not only combines high quality audio recording and playback capabilities but also allows the connection of most popular audio gear such as microphones, home stereos, musical instruments, and powered speakers to your USB capable computer. Special Feature: 1. Hot plug-and-play USB interface ,eliminates the need of traditional sound card. 2. Multi-channels technique, achieve analogy Stereo 5.1-channel sound effects 3. Dynamic surround background sound effects. 4. Virtual SPEAKER SHIFTER. 5. Freely set and switch the Microphone mode or speaker mode. 6. Available stereo mixed music effects; Karaoke function. 7. Record function by microphone( available from MB-102) 8. 16 rhythm modes for selection 9. 23 environment sound effects for selection 10. Able to transform the analogy sound signal(microphone,CD,MP3,TV,Radio,etc) to save as digital signal. System Requirements: one USB port With one of the following operating systems: Windows Me/2000/XP