Ethernet wiring color codes, used for internet connection | Cablek

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EIA / TIA (ISDN) STANDARD T568A

PAIR

PIN #

COLOUR CODE

T1
R1
T2
R2
T3
R3
T4
R4

5
4
3
6
1
2
7
8

White / Blue
Blue / White
White / Orange
Orange / White
White / Green
Green / White
White / Brown
Brown / White

AT & T T568B

PAIR

PIN #

COLOUR CODE

T1
R1
T2
R2
T3
R3
T4
R4

5
4
1
2
3
6
7
8

White / Blue
Blue / White
White / Orange
Orange / White
White / Green
Green / White
White / Brown
Brown / White

USOC 4 PAIRS

PAIR

PIN #

COLOUR CODE

T1
R1
T2
R2
T3
R3
T4
R4

5
4
3
6
2
7
1
8

White / Blue
Blue / White
White / Orange
Orange / White
White / Green
Green / White

White / Brown
Brown / White

USOC 1-2-3 PAIRS

PAIR

PIN #

COLOUR CODE

T1
R1
T2
R2
T3
R3

4
3
2
5
1
6

White / Blue
Blue / White
White / Orange
Orange / White
White / Green
Green / White

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