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.

[Jiaszzz_ASUS]

Hello @aivatnt 

Thank you for reaching out to us.
Could you kindly confirm the current BIOS version and specify which PCIe slot the Hyper M.2 x16 Gen5 Card is installed in?

To provide you with accurate information regarding specifications, I have reached out via private message to confirm the serial number of your motherboard.
Please note that serial numbers are considered personal information and should not be disclosed in public forums.

Thank you.

[Jiaszzz_ASUS]

Hello @aivatnt 

Regarding the Hyper M.2, we have a related FAQ available [Motherboard] Compatibility of PCIe bifurcation between Hyper M.2 series Cards and Add-On Graphic Ca... The ROG MAXIMUS Z890 HERO is a newer model, and its specifications will be updated in the relevant documentation in due course.
For the ROG MAXIMUS Z890 HERO, please note that the maximum number of SSDs supported when using the Hyper M.2 is limited to three. Kindly refer to the provided link and the specification sheet obtained through consultation for further details.

We recommend trying to install the Hyper M.2 in the PCIe x16 slot and verifying the setup again.

Thank you.