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Samsung SJ55W 2K 34 inch ultra wide.

The monitor has a resolution of 3440 X 1440. I am using hdmi connected to my M1 iMac via an Apple dongle. The highest resolution option I am getting is 1920 X 1080. I have followed the instructions from Apple. What am I doing wrong?

iMac 24″, macOS 11.5

Posted on Sep 4, 2021 5:43 AM

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Question marked as Top-ranking reply

Posted on Sep 4, 2021 7:06 AM

You could try a better quality premium certified HDMI cable.

But sadly you still may not do any better than (1080p) 1920x1080.


That display also supports DisplayPort, which offers a wider range of Resolutions option than HDMI.

https://www.samsung.com/us/computing/monitors/uhd-and-wqhd/34-sj55w-ultra-wqhd-monitor-ls34j550wqnxza/


With that in mind, your best bet is to get and use a USB-C to DisplayPort cable.

for some examples, see > usb-c to displayport

5 replies
Question marked as Top-ranking reply

Sep 4, 2021 7:06 AM in response to Jdginky

You could try a better quality premium certified HDMI cable.

But sadly you still may not do any better than (1080p) 1920x1080.


That display also supports DisplayPort, which offers a wider range of Resolutions option than HDMI.

https://www.samsung.com/us/computing/monitors/uhd-and-wqhd/34-sj55w-ultra-wqhd-monitor-ls34j550wqnxza/


With that in mind, your best bet is to get and use a USB-C to DisplayPort cable.

for some examples, see > usb-c to displayport

Samsung SJ55W 2K 34 inch ultra wide.

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