Jetson AGX Orin PCIe Configuration

I watched Orin DG PCIe Configuration, I know AGX Orin Dev. Kit use Configuration#1,


Configuration#1 PCIe UPHY0[7…4] in document (PCIe x2 (C4), RP).

But in P3737 schematics M.2 M-key use PCIe x4(C4),

So the question: Configuration#1 is PCIe x2 (C4) or PCIe x4(C4).