Schematic design of Intel CT desktop adapter

Hello Wired Ethernet Intel Community,

I have a Intel Gigabit CT Desktop Adapter, EXPI9301CTBLK schematics received from INTEL.

I have some of the doubts on the data lines Being Used.

PURPOSE OF-

1.NC_SI

2. NVM - Non Volatile Memory.

3. SMBUs.

4.External Power Transistor Options.

5.PCIe differential Data.

PFA files of 82574l section for clarification.

Also I have attached our schematics according to the Reference Design.

Kindly Let I know If there are any errors.

PLEASE DO HELP.

Regards,

Saravana