Luna Display 4.0: Time to dust off that old, extra Mac!

What if we could turn people’s e-waste into extra screen space? Introducing Mac-to-Mac Mode in Luna Display 4.0: Our all-new Mac-to-Mac Mode allows you to use any Mac as a second display. Finally, you can give purpose to your old Macs lying around! No need to have any idle devices. The combinations are nearly endless.
— Read on lunadisplay.com/blogs/news/luna-4-0-mac-to-mac