HWiNFO does not recognize PCI slots that are currently using bifurcation

[bh6]

NVMe expansion drives are now available for converting one x16 PCI slot into 4 different x4 slots.

[Motherboard] Compatibility of PCIE bifurcation between Hyper M.2 series Cards and Add-On Graphic Cards | Official Support | ASUS USA

Here is an example of a list of motherboards that support this feature.

Below is an example of how it currently looks. My PCI-1_x16 slot has an ASUS NVMe expansion card in it.

 

[Martin]

HWiNFO reports the PCIe properties according to PCIe specification.
The controller you posted above should be representing a single NVMe drive. So it's the capabilities of one drive, not the entire NVMe card which is most likely "transparent" to "software point of view".
How many NVMe drives do you have on the card?

 

[bh6]

Thank you for that explanation. I have 4 nvme drives on the card.

 

[Martin]

Then you should see 4 NVMe controllers under the respective PCIe ports/bridges. It's not obvious from the above picture though.