Hi,
You have an
ASRock Nahimic 3 motherboard, so, you need
Realtek Audio Drivers (UAD - ASRock NH3) from your motherboard support page.
However, if you still want to use legacy/outdated HDA drivers when your motherboard is designed to use modern UAD drivers, and that you
would love to have Realtek HD Audio Manager, you can try this :
Download
Realtek High Definition Audio Drivers (HDA - ASUS ROG/TUF/PRIME DTS&RTK) (Flagged ASUS but work also with other manufacturers, unlike UAD drivers which are specific for each manufacturer) from the first post of this thread :
[DRIVERS] Realtek Audio (Intel 6x/7x/8x/9x/1xx & AMD Legacy 6xx/7xx/8xx/9xx).
Follow scrupulously your CLEANUP process then your INSTALL process from
ASUS ROG/TUF/PRIME Realtek motherboards category from the same thread.
Also for information :
As reminder, of all that I offer in my firmware/drivers threads listed in my index thread in my signature (even though they are AIMed for ASUS motherboards), only the UAD audio drivers are ASUS specific.