The Plantronics DA60 USB adapter that connects professional headsets to computers. Function: Allows the use of traditional headsets (with Quick Disconnect) with Voice over IP (VoIP) communication applications. Audio Features: Features Digital Signal Processing (DSP) for clear audio, and echo cancellation. Control: Includes built-in in-line controls for volume adjustment and microphone muting. Compatibility: Works with operating systems and is Plug-and-Play via USB port. Best offer