[Request] Need Bifurcation-Option for MSI Z87-G45 Gaming

I’ve finally managed to get my computer directly boot up from the Asus Hyper m.2. Unfortunately only one of my 2 m.2-SSD´s are visible because the bifurcation is apparently not set correctly. Can this be activated in the bios? Or what exactly do I have to do? THX !
I used the following bios:

Full Link:
www.win-raid.com/t4654f44-OFFER-MSI-Z-G-…v.html#msg76430

U told u that this model supports Bifurcation, it doesn’t have HW controller for it.

The z87 should support bifurcration but there is no option in the BIOS.

Also consider than Intel consumer platforms can bifurcate to either 16x, 8x/8x or 8x/4x/4x, so put the second M.2 NVMe SSD in the third M.2 Slot of that card. It will NEVER work in the second one in Intel consumer platforms because you can’t do 4x/4x/4x/4x, period.

I have tried all possibilities but only one ssd is visible…