I just added a fully compatible image for the:
ASUS PRIME H270-PLUS (in stock, 6x gpu (8x if you use 2x m2 adapters) all OC) LinkIt also requires you to flash the bios (but you can do this via the internet) with this motherboard it can be done by connecting an Ethernet cable and entering the EZ Flash 3 Utility.
Select DHCP (unless all your devices are manually configured

) and download then install the update.
It should look like this. After updating
ensure 'Above 4G Decoding' is enabled in the bios. The SHA256 hash (for the zip) is:
edf1d67a539e6e56f4ddc1e44df582dd91726fc95905af00212c034421338b1c
Note:
you must use 2x m2 adapters to use 8x GPUs with this motherboard.You can
thank rabbitr32 for wanting to try this motherboard.It is the best $/supported_GPU Motherboard I have tested. M2 adapters might be hard to find right now.
THANKYOU!!! the board is on its way with 10x m.2 to pcie adapters. will test with latest bios and get back review here. good news!!