Plantronics DA40 USB to Quick-Disconnect Adapter

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Bring the audio quality and the comfort of Plantronics headsets to Voice over Internet Protocol (VoIP) softphones with the Plantronics DA40. The DA40 includes a USB-to-headset adap ter with crisp, clear sound.Please also consider the Plantronics DA55, which features Digital Signal Processing (DSP) for digitally improved sound. Or the Plantronics DA60, which offers all the same features as the DA55, plus an in-line mute switch and PerSono Pro 2.0 software for great control of voice and audio quality. Show more