4U Black USB Virtual 7.1 Channel Sound Adapter (Double USB Microphone,Double USB Headset)

The USB 2.1 Channel Sound Adapter is a highly flexible audio interface which can be used ether with Desktop or Notebook systems. No drivers required, just plug and play for instant audio playback, also compatible with all major operation systems.
1) Complaint with USB 2.0 Full-Speed (12Mbps) Specification.
2) Compliant with USB Audio Device Class Specification 1.0
3) Compliant with USB HID Class Specification 1.1
4) USB BUS-Powered mode, no external power required
5) Connectors: USB Type-A, Stereo output jack, mono microphone input jack
6) Driverless-No driver required for windows 98 SE/ME/2000/XP/Server 2003/Vista, Linux, Mac OS.