Plantronics USB Adapters for Corded Headsets DA40: *Wideband Audio for clear natural speech and lower listener fatigue *DSP = Digital Signal Protocol *Quick Disconnect Feature DA45: *Wideband Audio for clear natural speech and lower listener fatigue *DSP = Digital Signal Protocol *Echo Management for natural conversations *Inline Control for volume, mute, and answer/end calls with LED indicator *Quick Disconnect Feature … Continued
