@Fernando I followed guide from other guys with exactly this one motherboard and I afraid to mess. They're said that in case there's not enough space you should delete modules for "network loading", but they didn't provide the names of this modules.
If you think that inserting this single module should be fine I gonna test it and reply later.

UPD: Yes, that's seem to be works. I have an extra device in my disk drives. Now I gonna copy my system onto it and try to boot from this drive.
Can I attach BIOS file for people who somedays find this thread looking for exactly the same solution, or better not?

I tried modding my BIOS, but can't get my NVMe SSD to show up in boot devices.
Any idea what i'm doing wrong?

The post u linked...its a mess, i just tested insertion of the NvmExpressDxe_Small.ffs in the beta bios F10f and it fits without deleting any other modules. Did notice that in UBU the module is not listed when opened, u may need further guidance.

@Fernando:
Thanks.
I've attached the original (SNIPERM3.10f) & modded BIOS (sniperm3NVMe.10f).
Answers:
1. I used MMTool 4.50.0.23 to delete that EZfilebrowser module and insert the NVMe module, and flashed it with efiflash.exe on freedos rufus usb. I got no errors when flashing and the module shows up in MMTool and UEFITool_0.21.5 when i reload the modded BIOS.
2. I have a usb cardreader showing 4 empty SD/MMC/CF/MS available as boot device, i can remove that if that might cause issues. Besides that, none. (there's a pxe boot option but i have that disabled)
3. When i started that thread i was under the assumption that my first attempt at inserting the small NVMe module had succeeded, which only later -after that thread was created- i found out it didn't. I've been trying to get it to work ever since but sadly to no avail. Other than the NVMe module not working, the modded BIOS seems to run fine to me.

@MeatWar: Yes it is, i didn't delete the thread in hopes of some assistance and as a reference for myself but mods can delete it as they see fit.

@Fernando,
A while ago you helped me to mod my bios and get Samsung 960 EVO working at full speed on PCIe Starteck and MacOs. See link here: [Guide] How to get full NVMe support for all Systems with an AMI UEFI BIOS (136)
It's been awesome since then. Still using this machine.

I'm wondering if my Z97X gaming 5 with bios mod can support:
1. The Sonnet M.2 4X4 PCIe Card
2. The ASUS Hyper M.2 X16 Card V2. See here: ASUS Hyper M.2 X16 Card V2

Eagerly awaiting your response.
Many thanks.

@Fernando:
I re-did the mod, this time with the small NVMe module & filename of the source BIOS and flashed it with the Q-Flash tool in the BIOS (no errors).
Rebooted, set the BIOS options as mentioned in your guide and installed + booted Windows 10 without any problems.

Thanks for the help, should i share this BIOS now that it's working?

EDIT by Fernando: Inserted picture directly attached and resized to save space (can be enlarged by clicking onto it)

@Fernando
Thanks a lot.
I've shared the BIOS, here's the thread in case you'd want to have a look.

Hello i own a small msi motherboard https://www.msi.com/Motherboard/support/AM1I. Everything is ok except the few ports. I purchased this mini pci-e card with chipset ASM1061 https://www.aliexpress.com/item/32973542696.html. When i use linux or windows 10 they detect the connected devices on this card. Windows 7 does not detect the card. Also bios does not see the card too. Is there a way to unlock the bios without risk?