Question I3 8100 chip on GA H110M-H (c4 bios version)???????

I've seen people get coffee lake stable on 100 series boards with modded bios, but I've never heard of a S.I. offering systems that way before. If it's working okay, I'd say carry on until it makes itself a problem AKA that's a problem for future you.

The C4 BIOS is dated 12-03-2018? It seems to be a system integrator product only sold to companies for system building, not for general market like the models receiving F BIOS.

That date would put it among the latest in the release history for F ROM Family BIOS release. No additional CPU support in the F ROM family has been added since F20 in 2016, just ucode patch most likely for security vulnerability. Since it is already supporting 8th gen CPU, it might have support for other Coffee Lake models with "B0" stepping that could run on 100/200 Series chipsets without any pin modding, just BIOS support. But I do not know.

You could check the BIOS using a utility called "Coffee Time" which is developed for this purpose of BIOS modding to run Coffee Lake processors on Intel 100/200 series motherboards. Here is the list of reported B0 stepping/rev models that can work with BIOS support and do not require (in most cases) any modding to the CPU pin or motherboard.

Core i3 models:

• i3 9350KF
• i3 9350K
• i3 9300
• i3 9300T
• i3 9100F
• i3 9100
• i3 9100T
• i3 8350K
• i3 8300
• i3 8320
• i3 8300T
• i3 8100
• i3 8100T

Pentium G models:

• G5620
• G5600
• G5600F
• G5500
• G5500T
• G5420
• G5420T
• G5400
• G5400T
• G4950
• G4920
• G4900
• G4900T

If in Device Manager, you do not see any problem devices expanded with exclamation point or yellow triangle, after installing the latest Intel Chipset Inf Support (and restarting) then there should not be any problem or limited functionality.

I am using Intel pentium g5400 in h110 mh c4 bios version motherboard and I have installed a wifi dongle of 5ghz dual band but it's not showing any networks and on rest another devices it works perfectly