Replacement cord for the Plantronics M12. Also connects Plantronics H series headsets directly to the Cisco 7940 7960 and 7970 model phones that do not use a Power Cube.
Bring digitally enhanced audio quality and the comfort of Plantronics headsets to Voice over Internet Protocol (VoIP) softphones with the Plantronics DA55. The DA55 includes a USB-to-headset adapter with digital signal processing (DSP) for crisp, clear sound.