this post was submitted on 19 Nov 2023
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Macbook doesn't recognize third monitor (alien.top)
submitted 11 months ago by Secret-Fig-6702@alien.top to c/apple@hardware.watch
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Hey guys, so today I went ahead and bought a docking station with 2 HDMI slots. I connected the first monitor and it worked quite well but when I added the second one, it considered them to be one monitor...

I have the 2021 Macbook M1 Pro

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[–] poopmagic@alien.top 1 points 11 months ago

Which dock?

You need a Thunderbolt adapter/hub/dock to get two external monitors working. Non-Thunderbolt USB-C docks rely on MST (multi-stream transport) which is not supported by macOS.