The HP Poly MDA105 Analog Switch is designed for the HP Poly Quick Disconnect (QD) Headset.
 
It facilitates call management with a single headset and volume control. This easy-to-access switch allows seamless call management from different sources. Its simple and intuitive design minimizes disruptions. This switch's mute button with visual status makes it easy to silence calls. Featuring a coil cable, you can move freely, as the switch will be kept in place by the non-slip base.
 
With Volume Control.