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Old 05-03-2022, 08:40 PM   #1
DunLaoghaire
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Question iMac with M1 CPU and 3x displays with extended screens possible?

I help my church setting up ProPresenter on a brand new iMac with the M1 CPU. The app can present different stuff on various screens.

We would like to connect 3 or even 4 external screens. Are there any products that support extended screens instead of just mirroring the content to all screens?

I read that the M1 processor is limited but that DisplayLink hubs can bypass this limitation through their drivers. Is this correct or how else can I solve our problem? I hope we don't need to buy professional production kit... Thanks for any advice or links to answered questions.
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Old 06-28-2022, 01:54 PM   #2
sgkean
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Dell D6000 will allow you to get at least 3 screens up to 4K resolution. For the fourth you could add a USB to DisplayPort/HDMI dongle that uses DisplayLink as well.

The other option is the new Dell UD22 dock that does up to 4 screens at 4K resolution. I haven't tested this on a MacBook M1 though.
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Old 06-29-2022, 09:59 AM   #3
AlbanRampon
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Hello,

The Dell UD22 would only get 3 different displays on M1 as there are 2 outputs from DisplayLink technology and the other two are from DisplayPort MST.
The Dell D6000 would also get 3 different displays as there are 2 outputs from DisplayLink technology and the other one is from DisplayPort SST.

You can indeed cascade DisplayLink devices to get up to 4 on macOS. Or you can use a dock like the Targus Dock570 which use the 4-output DL-6910 chipset.
Please note that DisplayLink and Apple Sidecar share the same limit. Therefore if you use an iPad as Sidecar, you only have space left for 3 DisplayLink displays.

Here are products using DisplayLink technology we have tested
Other product exists too from the same and other manufacturers.
Provided they use DisplayLink technology, you can mix and match brands and models.

Regards,
Alban
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