Cat 5 Wiring Diagram from Ron

Kenn's
Tech
Notes

19991007: Cat 5 Wiring Diagram from Ron

October/1999
Tech Note #7

Ron H distributed a diagram last year for techs requiring Cat 5 cable pinouts. Under the ANSI/TIA/EIA 586 specs, there are two supported pin-out configurations. Although the differences between T568A and B are subtle, if they are mixed within a cable plant most topologies will not operate when the pairs are "crossed." Within the Division, T568A should be used, and this is the industry default.

If you are inserting the wires into the connector, hold the connector so that the openings are toward you, the gold pins away from you and facing up, and the plastic tab is down. In this orientation, the wires are numbered from 1 to 8, left to right.

1        White/Green
2        Green/White
3        White/Orange
4        Blue/White
5        White/Blue
6        Orange/White
7        White/Brown
8        Brown/White

DISCLAIMER: This document is intended for the reference of computer support personnel within Winnipeg School Division No. 1. There is no warranty or liability if procedures recommended here have an adverse affect on any systems. Use them at your own risk. Any trademarks mentioned are the property of their owners, none of whom have certified any information provided here. Opinions expressed here are personal only and do not represent the policy of Winnipeg School Division No. 1 or any other organization anywhere.

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2001 June 9

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