Polycom CX100 Speakerphone for Microsoft Lync 2013 and Lync 2010 Untie yourself from your handset and headset, for one-to-one calls or group conversations Control calls directly on the device by using convenient buttons and the solutions integration with Lync Enjoy portability and convenience, delivered by the integrated USB cable which stores inside the unit USB operation, A built-in stereo headphone port