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Universal Control is Apple’s most impressive new feature in years – But yes Apple only, and not for MacBook Airs prior to 2018
If you haven’t heard of Universal Control, it basically lets you use your Mac’s keyboard and mouse or trackpad to control your iPad (and the opposite scenario also works). Just nudge your cursor to the side of your Mac’s monitor, and it’ll jump on over to the iPad like it was another monitor hooked up...