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can I connect 3 displays to an iMac (Retina 5K, 27-inch, 2019)?

I have an iMac (Retina 5K, 27-inch, 2019). And I'm trying to connect 3 displays.

The two displays that I connected through thunderbolt works great. But the next one, that I connect through the screen port, won't work. If I unplug one of the other ones, then it's working. So it seems it's not letting me have 3 extra displays.

Any clues?

Posted on Nov 29, 2020 3:30 PM

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Posted on Nov 29, 2020 10:42 PM

Only two external displays supported.


iMac (Retina 5K, 27-inch, 2019) - Technical Specifications

"Simultaneously supports full native resolution on the built-in display at 1 billion colors and:

One 5120‑by‑2880 (5K) external display at 60Hz with support for 1 billion colors, or

Two 3840-by-2160 (4K UHD) external displays at 60Hz with support for 1 billion colors, or

Two 4096‑by‑2304 (4K) external displays at 60Hz with support for millions of colors"

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Question marked as Best reply

Nov 29, 2020 10:42 PM in response to IllusionistMatias

Only two external displays supported.


iMac (Retina 5K, 27-inch, 2019) - Technical Specifications

"Simultaneously supports full native resolution on the built-in display at 1 billion colors and:

One 5120‑by‑2880 (5K) external display at 60Hz with support for 1 billion colors, or

Two 3840-by-2160 (4K UHD) external displays at 60Hz with support for 1 billion colors, or

Two 4096‑by‑2304 (4K) external displays at 60Hz with support for millions of colors"

can I connect 3 displays to an iMac (Retina 5K, 27-inch, 2019)?

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