The T568A and T568B are two variations of the 8P8C (eight position, eight contact) modular connectors used for Ethernet networking cables. These connectors are commonly referred to as RJ45 connectors, after the Registered Jack standard that they are designed to use.
One of the key differences between the T568A and T568B connectors is their color coding. The T568A uses a standard color code that is widely accepted and used in the industry, while the T568B uses a different color code that is not as widely used.
T568A
The T568A standard color code assigns a specific color to each of the eight wires in the connector. The colors are:
- White/Orange
- Orange
- White/Green
- Blue
- White/Blue
- Green
- White/Brown
- Brown
This color code is used to ensure that the wires are correctly connected to the proper pins on the connector. For example, the white/orange wire should be connected to pin 1, the orange wire should be connected to pin 2, and so on.
T568B
The T568B standard, on the other hand, uses a different color code for the wires in the connector. The colors are:
- White/Green
- Green
- White/Orange
- Blue
- White/Blue
- Orange
- White/Brown
- Brown
This color code is not as widely used as the T568A standard, and it can lead to confusion when trying to connect Ethernet cables that use different color codes.
It is important to note that both the T568A and T568B connectors are compatible with the RJ45 standard and can be used interchangeably. However, it is recommended to use the T568A standard color code to avoid confusion and ensure proper connectivity.