The new and advanced Yealink Headset Adapter EHS40 provides a technical interface between your Yealink IP Phones（T58A/T57W/T54W/T53W/T53/T48S/T46S/T42S/T41S）and a compatible wireless headset, including Jabra, Plantronics, and Sennheiser wireless models. The unit is easy to install, simply link EHS40 to the USB port of the phone and, its plug-and-play effectively gives you the control of your Yealink phone and the ability to answer and hang-up calls remotely. Compatible with Jabra, Plantronics, Sennheiser. Control call through a wireless headset. Plug and play.