Crosshair Hero VI and OVMF passthrough of SATA controller. IOMMU

With the recent-ish bios update, there are now 2 sata controllers listed, one on its own IOMMU group. I tried for hours last night to make it work in a KVM but failed. The sata contrller in question is this one: IOMMU Group 20 11:00.2 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] [1022:7901] (rev 51)

Can someone throw me some helpful tips? Is this an actual sata controller, or is this controller perhaps for M.2? If that’s the case it would make perfect sense why I’m having trouble getting my SSD seen by win10