Hi,
Info from Gigabyte Support:
Unfortunately we don't test any RAID controller with this motherboard and because of that we can't provide you precise answer. Please contact with RAID controller manufacturers and confirm with them if specific model is compatible with our motherboard.
I have got this same info from controller manufacturers, please contact witch mobo manufacturer.
So the loop is closed and no side has no chance to help.
The easiest way to sell a product, and then have nothing to worry about.