I recently shared a post talking all about how you can use your iPad as a portable display for your Mac mini. Surprisingly the number one question i got was “can you use an old iMac or Macbook ...

What is the correct best way to use a 2013 iMac as an external display for an M1 MacBook Pro. What cable and setting if any for the iMac is the best ...

A patent granted to Apple describes an iMac with a built-in projector.

If you see the same thing on both displays, you should start by making sure the displays are Extended instead of Mirroring ...