You need a MacBook with a butterfly keyboard to use macOS Catalinas Sidecar

Apple released macOS Catalina today, and one of the update’s marquee features is Sidecar, which lets you use your iPad as a second display for your Mac. The feature is designed to be a handy way to give yourself some extra screen real estate, especially if you regularly carry around both an iPad and an Apple laptop. The Verge’s Dieter Bohn called it his favorite new feature on Catalina in our review.

But there’s a catch: if you’ve been holding out on buying an Apple laptop without the troubled butterfly keyboard, you can’t use Sidecar. According to an Apple white paper, Sidecar only works on laptops developed after 2015. Those include:

• MacBooks from 2016 or later (the second generation of Apple’s ultra-thin [and now gone] laptop line)

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