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How to Play Macbook Audio Over Classroom Speakers
Users can mirror their Macbook screen to the multimedia system in a classroom via a USB-C cable on the classroom podium. In order to play the audio alongside the video, the user has to update their Mac's audio settings.
1. Plug the podium's USB-C cable in to your Macbook.
2. Click the Apple icon on the top-left of the screen and open System Preferences.
4. Switch to the Output tab and select the classroom's Extron device (ExtronScalerD in the sample below).