Can I get a higher resolution than 1920x1080 on an extended display from my iMac
Can I get a higher resolution than 1920x1080 on an extended display from my iMac. I am connecting a Smart monitor with a resolution of 3840x2160 but in the display set up the maximum I can get is 1920x1080. The monitor works well with a Windows laptop and so it must be something in the iMAC.