Question: 1. what is the difference in typical usage between t568a and t568b standards?
Answer: T568A and T568B are the two color codes used for wiring eight-position RJ45 modular plugs. For additional color codes, click here. Both are allowed under the ANSI/TIA-568-C wiring standards. The only difference between T568A and T568B is that the orange and green pairs are interchanged.