manual = Most Asus motherboard websites will include a copy of the manual.
Now its not easy to find that one.
there is a H110 Plus -
https://www.asus.com/Motherboards-Components/Motherboards/All-series/H110-PLUS/HelpDesk_Manual/ which is ATX
the others appear to be MATX or smaller
H110M - K -
https://www.asus.com/au/Motherboards-Components/Motherboards/All-series/H110M-K/HelpDesk_Manual/
H110M-A/DP - Micro ATX and appears its mostly in OEM systems for enterprises,
its not this one -
https://www.asus.com/Motherboards-Components/Motherboards/All-series/H110I-PLUS/ as it looks different
but its about closest I have got to it.
someone was looking for the same manual 2 years ago and could only find the upgraded versions.
I would be surprised if the front connections have changed that much, so you could try one of the newer model manuals and see if it helps.
this could be the manual -
https://qanswers.site/?q=h110-m+m32cd+dp_mb+manual but I always suspect of 3rd party sites hosting files, so I would scan it before opening.