Ethernet Cable Wiring Diagram T568b. Therefore, the cable itself will physically perform the crossover function. Your cable run needs to terminate into a connector, and that connector needs a jack to plug into.
A and b wiring offer the same electrical properties and either standard can be used. This is rectified by correctly pairing the pins. The only difference between t568a and t568b is that pairs 2 and 3 (orange and green) are swapped.
Wiring the ends of the same cable according to different configurations (568a on one end and 568b on the other) will create a crossover cable.
Remember that pin 1 is on the left hand side of the rj45 connector with the clip at the rear. Both of them can be used. Your cable run needs to terminate into a connector, and that connector needs a jack to plug into. Registered jack 45 (rj45) is a standard type of physical connector for network cables.