https://devzone.nordicsemi.com/f/nordic-q-a/5926/how-to-send-media-key-volume--HI, PC(window7) - nrf51822 EK I used nrf51822 ek and HID keyboard sample source. I tried send some media key(volume up &amp; volume down). but Not working. How to ???en-USTelligent Community 13Thu, 12 Mar 2015 17:51:34 GMThttps://devzone.nordicsemi.com/thread/20644?ContentTypeID=1Thu, 12 Mar 2015 17:51:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f575845c-3a6d-4b4b-a7d7-e18750d2dfc3Asbj&#248;rn<p>What does not work? Did you see the board advertising? Were you able to establish the connection? Do you get any errors? What are you using as central? A phone? A tablet? You have to give us some more details on your setup for us to be able to help you.</p><div style="clear:both;"></div>