Gone are the days of being blinded by the ATEM Switcher. Note: The brightness control for the keys is in the ATEM Setup software NOT in the control software. The new setting in the ATEM software lets you dim down the backlight to be easier on the eyes. In such situations, the buttons were simply too bright, almost blindingly so. While luminous keys are ok when operating in a bright environment, it’s more likely that one operates the ATEM Mini in a dark corner. Users (including me) have complained about the very bright backlit keys of the ATEM Mini. That means more HDMI sources and monitors are supported, but I could not find more detailed information on that.