Samsung ativ book 5 nt500r5k-x53b

minumum OS : yosemite 10.10.3
support : 10.10.3 ~ 10.11
UEFI ver : P09RCY

working list

battery status(if not working, clear EC)
backlight(with Fn key)
HDMI AUDIO
ALC282 AUDIO(AppleHDA PATCH NEED!)
SPEED STEP
sleep(working)

not working

wifi/BT(atheros qca6174) : no driver
you need usb wifi/BT devive
sdcard reader : no driver
fan contorl

only el capitan:
some usb port(internel port). but you can use this ports.
like wifi/bt module etc,.

some bug fix how to

clear ec

unplug and reconnect internal battery(need )

HD5500 enable Guid

http://www.firewolf.science/2015/04/guide-intel-hd-graphics-5500-on-os-x-yosemite-10-10-3/

thank FireWolf please follow this step STEP 2.2: Using EFI Shell to change DVMT settings in BIOS.

MUST USED SAME UEFI VERSION

setup_var 0x142 0x4

(need more memory el capitan 10.11)