100BASE-T4 crossover pin layout

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Plug A Plug B
Pin # Signal Conductor Color Code Pin # Signal Conductor Color Code
1 Tx_D1+ white/green 3 Rx_D2+ white/orange
2 Tx_D1- green 6 Rx_D2- orange
3 Rx_D2+ white/orange 1 Tx_D1+ white/green
4 Bi_D3+ blue 7 Bi_D4+ white/brown
5 Bi_D3- white/blue 8 Bi_D4- brown
6 Rx_D2- orange 2 Tx_D1- green
7 Bi_D4+ white/brown 4 Bi_D3+ blue
8 Bi_D4- brown 5 Bi_D3- white/blue
Residential Cabling Guide

Home Cabling Guide

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