I found this
But I need to know how to find vendor code from company name,because it only works when the NIC works.
I have an old pc AMD sempron 3400+ socket AM2 windows xp
Biostar motherboard Nvidia chipset NF61s
when it worked I remembered its (onboard ) network in Hardware manager is Nvidia ethernet adapter But when it did not connect to the net I tried to reinstall the driver I found out that in the cd drivers of this motherboard In the LAN is the Realtek And in the manual it was a Realtek8201 CL PHY So how can I know its vender code In a website about Linux they showed how to recognize it by looking for 4 characters after "VEN" (Device manager ,this device ,properties, details, Device Instance ID)In this case it is an on board device there is no "VEN" in this code (Device instance ID )
What makes me confused is what should I look for if I don't have the CD driver Realtek or Nvidia
If I hadn't had this cd driver I should have looked in the notherboard to see what chip near the rj45 to find out what driver I needed
Thank you for your precious time and advice