The 2.0m A40 Inline Mute Cable, otherwise known as the Console Cable or Mute Cable, allows one to mute outgoing voice communication to the A40 headset. The cable has 2 different size ends, a 4 pole and a 5 pole. The 5 pole connection goes into the headset, and the 4 pole connection goes into the MixAmp™ Pro or the PC Splitter. Comes with all Black and White A40 Audio Systems.