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2 Monitors attached to MacBook Air M2

I've connected 2 monitors to my MacBook Air M2 via a port. Both monitors work, however the image in the same on both. In the display settings, only 1 monitor is detected. How do I detect both monitors so that I can extend the across all screens. Thanks

MacBook Air, macOS 13.0

Posted on Jun 26, 2023 7:47 PM

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Posted on Oct 27, 2023 12:10 PM

A DisplayLink adaptor is not a dock. It essentially creates a virtual displays which will allow for two external monitors. In fact on my M2 MacBook Air, I have run 3 external monitors, two from the DisplayLink adaptor, and the third from a USB C hub. The adaptor I have is a Plugable USBC-6950U, available on Amazon

52 replies

Oct 15, 2024 7:25 PM in response to nicstevens80

nicstevens80 wrote:

So question... I have a Dell Thunderbolt dock and then I have a Hiearcool USB C Hub, USB C Adapter, 7 in 1 USB C Dongle USB-C to HDMI Multi-Port Adapter Compatible for Thunderbolt 3 4 MacBook Pro Air Dell Lenovo HP Laptops and Other Type C Devices. When I plug in the dock, I get one monitor. Then I plug in the Hiearcool USB Hub into the other port on the machine and no matter what I use (HDMI, USB, USB-C) it won't see the other monitor.

I can plug both monitors into the Dell dock but it won't recognize them as being different it just sees both as one dock


Thunderbolt docks that support two monitors rely on using hardware video support provided by the computer. I don't ever think I have seen a Thunderbolt dock that supported DisplayLink or similar workaround technologies.


The M2 MacBook Air only supports a single external display, and thus a Thunderbolt dock connected to the M2 MacBook Air will support at most a single external display. (There is no second hardware video signal available that the dock can repackage.)


I would guess that the USB-C hub you are talking about is this one

https://www.amazon.com/Hiearcool-MacBook-Multiport-Compatible-Nintendo/dp/B07WPTG7NX?th=1

and that it also wants to see a hardware video signal from your computer – which only has one to offer.

Oct 15, 2024 7:47 PM in response to Servant of Cats

Appreciate that! I was in fact speaking about the 27" 5K Display.


I am going to get the M3 MacBook Air more than likely then. With the lid closed, do you happen to know what the resolution is on the first display VS what it drops to on the 2nd display? I'm most likely just going to use the 2nd monitor for Excel / Apple Music so resolution isn't too crucial although I splurged on the Studio Display so I'm hoping it still looks good.


TIA! PS, I'm a servant to many cats as well haha!!

2 Monitors attached to MacBook Air M2

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