Dell 5860 using Nvme M.2 Pcie Adapters

We are using a Dell 4 port Nvme M.2 Pcie Adapter and all 4 installed nvme m.2 drives are recognized in Windows 11 Pro.

However when we use a 3rd party 2 or 4 port Nvme M.2 Pcie Adapter only one drive is recognized.

Bios only has one bifurcation option and that is auto. (latest bios). 

So why does the Dell nvme m.2 pcie adapter allow us to see all 4 drives while other nvme m.2 pcie adapters do not?

Does the Dell adapter not require bifurcation? Hard to believe since it only cost a little over $100 and nvme adapters that Do Not require bifurcation are very expensive.

Would be nice to finally know the reason for this.

Any ideas would be appreciated.