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Model A1312 / Mid 2010 / 3.2 GHz Core i3 or 2.8 & 3.6 GHz Core i5 or 2.93 GHz Core i7, ID iMac11,3

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Mini DisplayPort to HDMI Adapter Supporting 1080p Max

On my iMac (27” Mid 2010) I would like to use it with a 1440p monitor, but whenever I connect it to the monitor, it will only support a maximum resolution of 1080p. I discovered the adapters I had tried to use, only supported a maximum resolution of 1080p, so I purchased this: which supports up to 4K. When it arrived, I tried using it with the iMac but still it only would support 1080p max, so I tested the adapter with a 2013 MacBook Pro, and oddly it worked at 1440p.

Does anyone have suggestions to fix this strange issue?

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Your systems graphics can’t push anything higher!

“Apple reports that this model simultaneously supports the native resolution of the built-in display and up-to a 30-inch external display (2560x1600)”

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Isn't 1440p 2560x1440? So wouldn't it support it, if it supports 2560x1600?


Natively via the DisplayPort, not through this HDMI adapter and is limited by the displays size as well.


@danj My monitor is a 27" monitor, and it does have DisplayPort, so would a Mini DisplayPort to DisplayPort cable work? Or would the monitor's specifications not work with the iMac?


Give it a try!


It worked! Thank you!


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Jonas A. zal eeuwig dankbaar zijn.

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