It also isn’t showing Promethean USB audio in control panel.
Thank you for your post.
Please check the audio settings on your computer – ensure that you choose Promethean USB audio on the Audio Playback settings.
if you still have issues, please provide us details below
– model of the board
– operating system
– what is the colour of the LED light on the standby button of the ActivBoard?
Promethean Technical Support