This article will show you how to use a second screen with a Mac, which adapters to use, how to set up the external screen, and which settings to tweak to make the setup work. We’ve seen this always done on Windows computers, but can you use a second screen with a Mac? The answer is Yes. The easiest way to increase your screen real estate is by connecting a second or a third display to your computer. If you love multitasking or if your work requires multiple apps to be open at the same time, more screen space would be getting more work done.