How can I force the Mac mini to output at 2160p? Or is Apple's marketing wrong and I bought a machine that doesn't actually support 4K over HDMI?Įdit: Apparently, it really is an Apple-acknowledged issue, but they've stubbornly not provided any fix. If I choose 'Scaled' for the resolution, the only options are 1080p, 1080i, 900p, and 720p. I've plugged in my Seiki 39' 4K TV (SE39UY04), but when the 'Best for display' option is chosen, it outputs 1080p, rather than 2160p. Based on Apple's documentation, my Mac mini (Late 2014, mid-range model with Intel Iris) should be able to support 4K video through HDMI.