This article provides tips about display settings and cable specifications to help you resolve an issue where a Mac does not recognize an external display.
Solution – External display not recognized when connected to your MacBook M1
Try the following solutions in the order presented to ensure your Mac recognizes the external display.
If you are using a MacBook, try plugging it into a power outlet. Some power-saving settings limit certain processes to extend battery life.
Check to see if your Mac supports more than one additional monitor. You can check the supported number of displays by clicking the Apple icon System Preferences > Help > Your MacBook > and looking under Display Support or Video Support.
