Jabra EVOLVE Mono 40 stand alone headset 14401-09 

This stand alone headset can be matched with your existing EVOLVE Link, which defines if the headset fits UC or Microsoft Lync solutions.

If you only need the Jabra EVOLVE 40 Mono including the 3.5 mm jack stick it can be ordered separately.

Jabra EVOLVE 40 Stereo stand alone headset 14401-10

Jabra Headset Compatibility Guide