Power & Source of Big Ideas

Hi!

Is it enough to use ETH-TRD1 +, ETH-TRD1-, ETH-TRD2 +, ETH-TRD2- to use 100Mbit Ethernet?
What to do with the other four contacts ETH-TRD3 +, ETH-TRD3-, ETH-TRD4 +, ETH-TRD4-?
It is not very clear in the description how to use the power pins - in or out. Is this table correct? 3.19 - Power output 5v 3.17 - Power output 5v 2.22 - Power in / out 5v ??? 2.1 - Power in / out 5v ??? 1.4 - Power in / out 5v ??? 1.2 - Power in / out 5v ??? 1.1 - Power output 3.3v ??? 1.17 - Powe...
Help me find NanoPI Core2 3D KiCad library or template.