Computer: Apple Mac Mini (Late 2014) 2.8 Core i5 with Intel Iris Graphics
Monitor: LG 27UD68-W.AUS
I purchased this adapter CAC-1170 (REV.:A3-00) because when I use a HDMI cable, or Mini DisplayPort to HDMI passive cable, it only runs at 4096×2160 30hz or 1920×1080 30hz HDPI
I connected the adapter CAC-1170 via Mini DisplayPort and connect to monitor with a HDMI cable, I can get 4096×2160 60hz or 1920×1080 60hz HDPI, which is great, but there is a problem: when the computer goes to sleep mode, or the display turn off after a while, and when I try to wake up the Mac mini, the screen is blue, sometime is green, when I try to restart the computer, it simply doesn’t restart correctly, the monitor shows no signal, so I have to remove the adapter and connect to the HDMI port, then reconnect the adapter after it’s finished booting into macOS.