I am here to talk about PCIe Bifurcation.
Bifurcation is where you “split” a portion of your PCIe Slot into sections to be used by certain types of hardware
One such type of hardware is the ASUS Hyper M.2 x16 (Quad NVMe) Adapter Card or the ASRock Ultra Quad NVMe M.2 Card
Since these cards do not have an on-board PLX chip, they can not “natively” provide the bifurcation “switching” capability needed to split the x16 slot into x4/x4/x4/x4.
Motherboards with Bifurcation?!
Instead we will use this card with motherboards that already have the capability to provide “native” Bifurcation
These boards can include tons of many makes and models and you can definitely verify your motherboard compatibility if you explore the BIOS settings.
I will demonstrate using the PCIe BIOS Settings of the GA-7PESH2 motherboard