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There are two standards for CAT5
It seems that 568-B is the most common, but I've always used the 568-A version with success.
Below are two equally valid ways to make a patch cable
If you want to make a straight patch cable use one of the methods for both ends.
If you need a cross-over cable use 568-B for one end and 568-A for the other!
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568-B Wiring
| Pair # |
Wire |
Pin # |
| 1-White/Blue |
White/Blue |
5 |
| Blue/White |
4 |
| 2-Wht./Orange |
White/Orange |
1 |
| Orange White |
2 |
| 3-White/Green |
White/Green |
3 |
| Green/White |
6 |
| 4-White/Brown |
White/Brown |
7 |
| Brown/White |
8 |
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568-A Wiring
| Pair # |
Wire |
Pin # |
| 1-White/Blue |
White/Blue |
5 |
| Blue/White |
4 |
| 2-White/Green |
White/Green |
1 |
| Green/White |
2 |
| 3-White/Orange |
White/Orange |
3 |
| Orange/White |
6 |
| 4-White/Brown |
White/Brown |
7 |
| Brown/White |
8 |
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