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Drive Two iMacs In TDM With M1 MacBook Air?

ab225

ab225

macrumors regular
Original poster
Dec 21, 2016
112
101
I've currently got a setup where I'm using an M1 MacBook Air in clamshell mode driving a 2009 27" iMac in target display mode. It's been pretty good so far, but I was wondering if it's possible to drive two iMacs at the same time? I can't think of a reason why not (apart from needing to buy a hub), but before I buy anything, are there any limitations I'm not aware of?
 

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ab225 said:
I've currently got a setup where I'm using an M1 MacBook Air in clamshell mode driving a 2009 27" iMac in target display mode. It's been pretty good so far, but I was wondering if it's possible to drive two iMacs at the same time? I can't think of a reason why not (apart from needing to buy a hub), but before I buy anything, are there any limitations I'm not aware of?
Click to expand...
The M1 Air only supports one external display via Displayport/HDMI/Thunderbolt. Also, Apple don't support DisplayPort Daisy-chaining.

There is a solution using a hub/adaptor that supports "DisplayLink" which involves installing drivers (...and the danger of compatibility hassles with future OS upgrades) and may not have the performance of a "proper" connection - whether it works with an iMac in TDM is another question (I'd guess yes with a DisplayPort iMac, no with a TB1/2 iMac). https://www.macworld.co.uk/how-to/h...ternal-displays-apple-silicon-m1-mac-3799794/
 
theluggage said:
The M1 Air only supports one external display via Displayport/HDMI/Thunderbolt. Also, Apple don't support DisplayPort Daisy-chaining.

There is a solution using a hub/adaptor that supports "DisplayLink" which involves installing drivers (...and the danger of compatibility hassles with future OS upgrades) and may not have the performance of a "proper" connection - whether it works with an iMac in TDM is another question (I'd guess yes with a DisplayPort iMac, no with a TB1/2 iMac). https://www.macworld.co.uk/how-to/h...ternal-displays-apple-silicon-m1-mac-3799794/
Click to expand...
Ah, yeah I think I remember hearing that ages ago. That's annoying. Well, at least I didn't buy another iMac. Thanks
 
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