Networking UTP Cable Color Coding

 

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ChatGPT said:

Sure! Here's a summary of UTP (Unshielded Twisted Pair) cable color coding used in networking, specifically for Ethernet cables (Cat5e, Cat6):

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UTP Cable Wiring Standards

There are two main wiring standards for UTP cables:

1. T568A

2. T568B

Both standards define the order of the eight wires (4 twisted pairs) inside the cable.

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Wire Colors and Pairing

Pair #	Colors
1	White/Green & Green
2	White/Orange & Orange
3	White/Brown & Brown
4	White/Blue & Blue

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T568A Wiring Order (Pin 1 to Pin 8)

Pin #	Wire Color
1	White/Green
2	Green
3	White/Orange
4	Blue
5	White/Blue
6	Orange
7	White/Brown
8	Brown

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T568B Wiring Order (Pin 1 to Pin 8)

Pin #	Wire Color
1	White/Orange
2	Orange
3	White/Green
4	Blue
5	White/Blue
6	Green
7	White/Brown
8	Brown

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Usage

• T568B is more common in the US.

• T568A is often preferred by the US government or in some international installations.

• Both standards will work fine as long as both ends use the same standard.

• For crossover cables, one end uses T568A, and the other uses T568B.