Hello The ports should be labeled in several places. If you look at the ports on the back of the server they should have numbers on them. Port enumeration within the operating system may not match the physical port numbers. You can check the MAC address of the physical ports from within the iDRAC web interface. You can use the MAC address to verify the port enumeration within the OS. [URL] Thanks
I'm working on an old Dell R420. It has 2 built in net ports and an expansion card with 4 ports. The dual port is listed as ports 4 and 5. The quad port is 0 through 3. How do I find out which port is 0 and which is 3?  
Figuring out the Intel I350 QP NIC