Enable hdmi audio Mac Sierra 10.12.5 motherboard asus b250f

I am not able to enable hdmi audio for mac sierra 10.12.5.

Brand
Asus

Fashion model
STRIX B250F GAMING

CPU
Intel, Socket 1151 for 7th / 6th generation Core ™ i7 / Core ™ i5 / Core ™ i3 / Pentium® / Celeron® processors
Supports Intel® 14 nm CPU
Supports Intel® Turbo Boost 2.0

Chipset
Intel® B250

Memory
4 x DIMM, maximum capacity of 64GB, DDR4 2400/2133 MHz Non-ECC, Un-buffered

Graphic
Integrated graphics processor - Intel® HD Graphics
Supports connectors: HDMI / DVI-D / DisplayPort 1.2...

Enable hdmi audio Mac Sierra 10.12.5 motherboard asus b250f