What is one of the primary differences between T568A and T568B?

The primary difference between T568A and T568B standards is wire positioning. These standards outline how the individual wires within an Ethernet cable should be arranged and connected to the connectors. Each standard specifies a different configuration for the pairs of wires, resulting in a distinct arrangement when the cable ends are terminated.

For instance, in T568A, the first pair consists of white/green and green solid, while the second pair is white/orange and orange solid. In contrast, T568B swaps the second pair with white/orange and orange solid as the first pair while keeping the first pair and third pair the same. The choice between these two standards often depends on existing installations or specific organizational preferences, but both are valid for creating functional Ethernet connections.

Color coding, price, and length of cable do not represent the fundamental difference between these two wiring standards. While color coding is relevant to identifying wire pairs and maintaining consistency, the actual arrangement of the wires is what defines the difference.