WD_BLACK SN850 NVMe SSD PCIe Gen4 Not Working on RAMPAGE V EXTREME/U3.1

[FarhanAtWork]

Hi, I bought WD_BLACK SN850 2TB NVMe SSD PCIe Gen4 with Heatsink.

But my Asus Rampage V Extreme /U3.1 mobo does not detect this new SSD.

I have an old NVMe SSD which was Intel SSD 660p Series PCIe NVMe 3.0 x4 1TB and that works fine on this motherboard.

Does this motherboard not support the new NVMe SSD PCIe Gen4?

I did test my new SSD on other motherboard (other brand) and it works fine; the other motherboard brand detects this new SSD.

Is there a special settings I need to set to use this new SSD version on Asus Rampage V Extreme/U3.1 mobo?

My CPU is Intel Core-i7-5820K.

Anyone got any ideas if this new SSD works on this motherboard and how can I make it work?

I have tried reset bios and clear CMOS but nothing works; and my old SSD still works fine when I retest it, but not the new SSD.

Thanks.

[Powerfull]

When using 28-Lane CPU, PCIE_X8_4 (3.0) is disabled and the M.2 x4 port should still work fine.

Do you confirm that the drive does not appear at all in the BIOS?

As for the OS you need the lasted Windows 10/11 or it won't be detected, happened to me on the Corsair MP600 PRO XT 2To, it must be due to NVME driver version .

You can try the following in the BIOS, but it should work out of the box:

Advanced Menu -> Onboard Devices Configuration -> PCIEx8_4 and M.2 Configuration -> M.2

Advanced Menu -> System Agent Configuration -> NB PCI-E Configuration -> PCIEX8_4 Link Speed -> Gen3