macOS Catalina's 'Sidecar' Feature for Turning the iPad Into a Second Display Limited to Newer Macs

Apple in macOS Catalina introduced a new feature called Sidecar, which is designed to turn an iPad into a second display for a Mac, either extending what's on the screen or mirroring the content.

Apple hasn't yet provided details on which devices will work with ‌Sidecar‌, but developer Steve Troughton-Smith was able to find some details by digging into ‌macOS Catalina‌'s code.


As it turns out, ‌Sidecar‌ is limited to many of Apple's newer Macs, and the devices listed below will be able to use it.

It's not clear if this is a complete list, but Troughton-Smith says a long list of older machines are blacklisted from taking advantage of the feature. Some older Macs that are not greenlit for ‌Sidecar‌ can still use the feature via the Terminal command provided by Troughton-Smith, but there's no complete list on exactly which older Macs the Terminal command works with.


There's no word on whether all iPads will work with ‌Sidecar‌, or if there will be limitations on that end as well. iPadOS, required for ‌Sidecar‌, runs on The ‌iPad‌ Air 2 and later, the ‌iPad‌ mini 4 and later, the 5th-generation ‌iPad‌ and later, and all iPad Pro models.

The oldest of these iPads, the ‌iPad‌ mini 4 and the ‌iPad‌ Air 2, use A8 and A8X chips respectively, while the newer models all use more powerful chips.

Update: According to a MacRumors reader who has used the feature, ‌Sidecar‌ works well with the ‌iPad‌ Air 2, which means it should also work with all other iPads that are compatible with iOS 13.

Related Roundup: macOS Catalina

Top Rated Comments

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24 weeks ago
Are there any hardware limitations for this, or are Apple just taking the piss?

The Mac Pro that you can go into the stores and buy right now isn't supported!
Rating: 29 Votes
24 weeks ago
Disappointing, very disappointing. My mid 2015 15 inch MB Pro is out, then. Don't tell me an i7 and a dedicated Radeon graphics card can't handle Sidecar...
Rating: 25 Votes
24 weeks ago
Typical Apple move.

It's not about performance.
If a 2018 MacBook Air can do it, how can any retina MacBook Pro not be about to do it performance wise??
Not to mention 2013 Mac Pro
Rating: 16 Votes
24 weeks ago

Typical Apple move.

It's not about performance.
If a 2018 MacBook Air can do it, how can any retina MacBook Pro not be about to do it performance wise??
Not to mention 2013 Mac Pro

It apparently uses hardware HEVC support for the best picture. Which I think only started with Skylake CPUs.
Rating: 15 Votes
24 weeks ago
how typical
Rating: 12 Votes
24 weeks ago

I’d wager it involves the T2 chip somehow


I'll take that wager (and your money), since iMacs don't have a T2 chip nor do pre-2018 MBPs.
Rating: 8 Votes
24 weeks ago

It apparently uses hardware HEVC support for the best picture. Which I think only started with Skylake CPUs.


You nailed it. All the minimum supported Mac models have Intel Skylake or newer.

https://en.m.wikipedia.org/wiki/List_of_Macintosh_models_grouped_by_CPU_type#Skylake
Rating: 7 Votes
24 weeks ago
My Macbook Pro 17" (the last real Pro laptop made by Apple) running Duet Display just fine.

Bought it for 2500,- in 2011

Now I can pay double for a smaller 15" at 5000,-
With: A. a keyboard that isn't reliable, B. no RAM replacement, C. no storage replacement, D. Display cables that break, E. 4 Thunderbolt slots (skipping all other ports) when 2 made way more sense, F. and the f% up T2 chip.

I want to buy a new MBP but how can I with this crappy line up?!?!
Rating: 7 Votes
24 weeks ago
Oh wow. That list is way more restrictive than the previously mooted 2014 or later desktops, 2015 or later laptops (ish).
Rating: 7 Votes
24 weeks ago
The list looks very restricted, and almost as if they want to force you to upgrade
I seriously doubt it is any hardware limitation other than them maybe offloading things onto the T2 chip (which seems odd)

But as Duet and Luna work without any restrictions I suspect Apple has an ulterior motive
Rating: 7 Votes

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