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Ultra Wide monitor resolution issue

I just bought a IIYAMA G-MASTER GB3461WQSU-B1 which has a native resolution of 3440x1440 but my MacBook Pro (Retina, 15-inch, Mid 2015)  can't run it at its full resolution. 


Some have suggested a WARRKY USB-C To DisplayPort cable but my machine only has thunderbolt 2 ports. Is there an adaptor cable I can use with this or another cable that will allow me to run the full resolution on the monitor?

MacBook Pro 15″, macOS 10.15

Posted on Jan 18, 2023 12:35 PM

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Your display has two DisplayPort 1.4 ports.


Thunderbolt-2 is a SuperSet of Mini DisplayPort.


Mini DisplayPort is a direct re-wire (no conversion) for [Full size] DisplayPort.


try this one, electrically the same as DisplayPort 1.4, and rated up to 4K:


Monoprice Select Series Mini DisplayPort 1.2 to DisplayPort 1.2 Cable, 6ft - Product # 13373 - $6.57  


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Posted on Jan 18, 2023 12:45 PM

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Jan 18, 2023 12:45 PM in response to Iain_Petts

Your display has two DisplayPort 1.4 ports.


Thunderbolt-2 is a SuperSet of Mini DisplayPort.


Mini DisplayPort is a direct re-wire (no conversion) for [Full size] DisplayPort.


try this one, electrically the same as DisplayPort 1.4, and rated up to 4K:


Monoprice Select Series Mini DisplayPort 1.2 to DisplayPort 1.2 Cable, 6ft - Product # 13373 - $6.57  


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Ultra Wide monitor resolution issue

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