It is the inspect button that allows you to view key info of your inputs, scenes, overlays and media without the need to switch or cue them!
For more information about the buttons on the RØDECaster Video/S, please see our article: Understanding the Control Buttons on the RØDECaster Video
Check out our video below for a detailed explanation of the inspect button:
For more information about the RØDECaster Video or RØDECaster Video S, please see our RØDECaster Video User Guide & RØDECaster Video S User Guide