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2019 iMac not connecting to external HP27h monitor

I just purchased a new HP 27h monitor to use as an external monitor next to my iMac. No connection issues with my other Mac devices (2018 MacBook Pro laptop/Monterey 12.6.5 & 2021 iMac/Monterey 12.5.1).


It will not connect to my 2019 iMac running on Ventura 13.4.


I suspect that my 4-year-old iMac running the latest operating system may be the issue. Can anyone confirm this?


I have always used a second monitor for my workspace set-up, and I am feeling very claustrophobic being limited to just one monitor now. Is the solution to downgrade the operating system to Monterey 12.6?


Do Thunderbolt ports (USB-3) go bad? Because it seems that one of my ports is not connecting properly. But I have a working one, as my phone is getting a charging signal. I am ensuring the monitor is connected to that one, and still, no input signal is being found.

Posted on May 27, 2023 1:17 PM

Reply
Question marked as Top-ranking reply

Posted on May 27, 2023 1:48 PM

Do Thunderbolt ports (USB-3) go bad?

Do Thunderbolt ports (USB-3) go bad?

Not usually, Have you done a PRAM reset, CMD+Option+p+r...


Reset NVRAM on your Mac - Apple Support


In fact, do 3 in a row, takes a bit of time.


Intel-based Macs: Resetting the System Management Controller (SMC)...


Reset the SMC of your Mac - Apple Support


Similar questions

3 replies
Question marked as Top-ranking reply

May 27, 2023 1:48 PM in response to kkane2009

Do Thunderbolt ports (USB-3) go bad?

Do Thunderbolt ports (USB-3) go bad?

Not usually, Have you done a PRAM reset, CMD+Option+p+r...


Reset NVRAM on your Mac - Apple Support


In fact, do 3 in a row, takes a bit of time.


Intel-based Macs: Resetting the System Management Controller (SMC)...


Reset the SMC of your Mac - Apple Support


2019 iMac not connecting to external HP27h monitor

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