ROG MAXIMUS Z890 HERO with ASUS HYPER M.2 X16 Gen5 Card can't show 4 disk

[aivatnt]

Why the ROG MAXIMUS Z890 HERO with ASUS HYPER M.2 X16 Gen5 Card does not show the 4 drives on it, it only shows three. In the BIOS settings under PCIe Bifurcation you can only select PCIE x8x4x4 mode.