Answer
The Vendor ID and Device ID of PE15N are 14E4 and 432B. The PCI registry paths are under [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Enum\PCI] and [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\PCI] Under these two paths, you can find all registered PCIe modules in this system. Fine the one that with VEN_14E4&DEV_432B-----, and this is the one PE15N register in the system.
/filters:background_color(white)/2024-12/SDC-PE15N.png)
/filters:background_color(white)/2024-12/SDC-EC15N1.png)
/filters:background_color(white)/2024-12/SDC-EC15N.png)