uhd display
8750h
dw1830
16GB Ram
use the install clover to install Mac OS Majave(10.14, 10.14.1, 10.14.2, 10.14.3, 10.14.4) and boot into the system
then replace the EFI folder, rebuild kextcache and reboot
Intel Graphics accelleration(uhd630)
wifi & bluetooth (dw1830)
Audio
brightlight control
type-c external display (I use ThinkVersion T24h, it works well, just use the boardid of iMac14,1 Mac-031B6874CF7F642A)
type-c to hdmi/vga also works
...
hdmi port
sleep
...
ps:
I have swipe the capslock and left ctrl,
replace a VoodooPS2Controller.kext
can restore