I have two Asus Pro art monitors connected to my new M4 Mac Mini. Even though I switch it off manually when I don't want it to come on, the second monitor wakes up when the system backs up or whatever and the screen goes blue. I couldn't find any way to control this in the system settings. Any suggestions for keeping it asleep when the main monitor is asleep other than the very inelegant solution of unplugging it? Thank you