NVME PCIE Expansion Card Not Showing Drives

[Bigshot0910]

So, I bought the following product: Asus HYPER M.2 X16 GEN 4 CARD Hyper M.2 x16 Gen 4 Card (PCIe 4.0/3.0)

 

Because I have, or plan to have 6 NVME drives (currently waiting for my WDBlack SN850 2TB to come in). 

 

I know the expansion card is working, because it's where my boot drive is, but the other three drives on the card are not being detected (1 formatted and 2 unformatted). They don't even show up on Disk Management.

[AbydosOne]

4 minutes ago, Bigshot0910 said:

So, I bought the following product: Asus HYPER M.2 X16 GEN 4 CARD Hyper M.2 x16 Gen 4 Card (PCIe 4.0/3.0)

 

Because I have, or plan to have 6 NVME drives (currently waiting for my WDBlack SN850 2TB to come in). 

 

I know the expansion card is working, because it's where my boot drive is, but the other three drives on the card are not being detected (1 formatted and 2 unformatted). They don't even show up on Disk Management.

These cards require your motherboard to have PCIe bifurcation, which not all support. What if your motherboard model? Also, to use all the drives, it needs to be in a fully-connected x16 slot (not just physically, all the pins need to be there too).

[Bigshot0910]

I've got an ASUS Crosshair VIII Formula, it's installed in the bottom full length PCIE slot

 

EDIT:

 

Full system specs:

 

ASUS Crosshair VIII Formula

AMD Ryzen 5900x

4x 16GB sticks of 3600Mhz CL16 G.SKILL Trident Z (not running at that speed yet, haven't turned on DOCP yet)

EVGA RTX 3090 FTW3 Ultra

ElGato 4k60 Mk.2

Asus HYPER M.2 X16 GEN 4 CARD Hyper M.2 x16 Gen 4 Card (PCIe 4.0/3.0) (containing 1 NVME 3.0 1TB (boot drive) and 3 NVME 3.0 2TB drives (not detected))

1x WDBlack SN850 1TB in the mobo

2x 1TB SATA SSDs

2x 4TB SATA HDDs

[AbydosOne]

3 minutes ago, Bigshot0910 said:

I've got an ASUS Crosshair VIII Formula, it's installed in the bottom full length PCIE slot

That slot is only x4, so the first NVMe will be the only one seen.

 

To get all 4 to work, you'd need to put it in the top slot and have the GPU in the bottom (not at all recommended). Those Hyper cards were designed for HEDT platforms with multiple x16 (electrical) slots. The standard consumer platforms don't have enough PCIe lanes for all the NVMe drives you want to install.

[Bigshot0910]

 

8 minutes ago, AbydosOne said:

That slot is only x4, so the first NVMe will be the only one seen.

 

To get all 4 to work, you'd need to put it in the top slot and have the GPU in the bottom (not at all recommended). Those Hyper cards were designed for HEDT platforms with multiple x16 (electrical) slots. The standard consumer platforms don't have enough PCIe lanes for all the NVMe drives you want to install.

Well that sucks. Any way to set it up to be X1 for each drive and sacrifice some speed (especially since they are only pcie 3.0 drives).

[AbydosOne]

Just now, Bigshot0910 said:

The manual lists 

Well that sucks. Any way to set it up to be X1 for each drive and sacrifice some speed (especially since they are only pcie 3.0 drives).

AFAIK, bifurcation usually only works down to x4. The card is actually a fancy-but-electrically-dumb riser card, so there's no way to reroute the lanes to the other drives.