User profile for user: Coreman82
Coreman82 Author
User level: Level 1
38 points

Multiple extended monitor setup

For the life of me I cannot figure out how to actually get this done. I know it's possible I just don't know how. Through trial and error I determined that macOS does not support multi stream transport. How can I connect 3 external monitors to my 2019 iMac? I want to have the 3 displays in extend mode for more real estate. Is the only way to daisy chain 3 monitors with thunderbolt 3 or is there some way to pull this off with an adapter that I have not found yet? Thanks in advance!

iMac (2017 – 2020)

Posted on May 10, 2023 08:01 PM

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User profile for user: BDAqua
BDAqua
User level: Level 10
250,013 points

Posted on May 16, 2023 11:25 AM

2nd Display Support:Dual/Mirroring*2nd Max. Resolution:3840x2160 x2

Details:*This model can simultaneously support the internal display at full native resolution and up to one 5120x2880 (5K) external display at 60 Hz with support for one billion colors; two 3840x2160 (4K UHD) external displays at 60 Hz with support for one billion colors; or two 4096x2304 (4K) external displays at 60 Hz with support for millions of colors. It supports both extended desktop (second workspace) and video mirroring (internal display duplicated on the external display) modes.


Details:This model has two Thunderbolt 3 ports. These two ports support DisplayPort, Thunderbolt (up to 40 Gbps), and USB 3.1 Generation 2 (up to 10 Gbps). Adapters also are available to use Thunderbolt 2, HDMI, DVI, and VGA.

https://everymac.com/systems/apple/imac/specs/imac-core-i3-3.6-21-inch-aluminum-retina-4k-early-2019-specs.html#macspecs2


Call these people to make certain, but this Dock says...

  • Connect two 4K displays or one 5K display

https://eshop.macsales.com/shop/docks/owc-thunderbolt-3-dock

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User profile for user: BDAqua
BDAqua
User level: Level 10
250,013 points

May 16, 2023 11:25 AM in response to Coreman82

2nd Display Support:Dual/Mirroring*2nd Max. Resolution:3840x2160 x2

Details:*This model can simultaneously support the internal display at full native resolution and up to one 5120x2880 (5K) external display at 60 Hz with support for one billion colors; two 3840x2160 (4K UHD) external displays at 60 Hz with support for one billion colors; or two 4096x2304 (4K) external displays at 60 Hz with support for millions of colors. It supports both extended desktop (second workspace) and video mirroring (internal display duplicated on the external display) modes.


Details:This model has two Thunderbolt 3 ports. These two ports support DisplayPort, Thunderbolt (up to 40 Gbps), and USB 3.1 Generation 2 (up to 10 Gbps). Adapters also are available to use Thunderbolt 2, HDMI, DVI, and VGA.

https://everymac.com/systems/apple/imac/specs/imac-core-i3-3.6-21-inch-aluminum-retina-4k-early-2019-specs.html#macspecs2


Call these people to make certain, but this Dock says...

  • Connect two 4K displays or one 5K display

https://eshop.macsales.com/shop/docks/owc-thunderbolt-3-dock

Reply
User profile for user: BDAqua
BDAqua
User level: Level 10
250,013 points

May 10, 2023 10:31 PM in response to Coreman82

2nd Display Support:Dual/Mirroring*2nd Max. Resolution:3840x2160 x2

Details:*This model can simultaneously support the internal display at full native resolution and up to one 5120x2880 (5K) external display at 60 Hz with support for one billion colors; two 3840x2160 (4K UHD) external displays at 60 Hz with support for one billion colors; or two 4096x2304 (4K) external displays at 60 Hz with support for millions of colors. It supports both extended desktop (second workspace) and video mirroring (internal display duplicated on the external display) modes.


2nd Display Support:Dual/Mirroring*2nd Max. Resolution:3840x2160 x2

Details:*This model can simultaneously support the internal display at full native resolution and up to one 5120x2880 (5K) external display at 60 Hz with support for one billion colors; two 3840x2160 (4K UHD) external displays at 60 Hz with support for one billion colors; or two 4096x2304 (4K) external displays at 60 Hz with support for millions of colors. It supports both extended desktop (second workspace) and video mirroring (internal display duplicated on the external display) modes.


https://everymac.com/systems/apple/imac/specs/imac-core-i5-3.1-27-inch-aluminum-retina-5k-early-2019-specs.html

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Multiple extended monitor setup

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