USB Adapter Cable with Volume Control and Mute Functionality Connects into a PC, Laptop or Sofphone For Use with any Jabra Style QD (quick disconnect) Headset to connect to PC or Device Via USB. Enables Headsets to be used on VOIP/UC Softphones such as Skype ans skype for business, Lync, Office 362, Cisco Jabber etc. This Connects to and works with ALL Jabra QD Headsets In-Line Volume Control and Mute The In-Line Volume Control and Mute allows the User to Control the call from the adapter cable keeping them on point with every call. USB Adapter This USB adapter Connects into the QD connection of the headset (Jabra) and the USB connects into any Computer, Laptop or Softphone Read more