RJ45 ethernet wiring

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Notes

When using punch-down connectors as found in Keystone modules be sure you are using solid wire, not braided wire.

Punch-down connections are a type of insulation-displacement connector (IDC), also known as insulation-piercing connector (IPC).

Note that Vampire connectors work with braided wire.

RJ45 wired human pattern

pin 1 pin 2 pin 3 pin 4 pin 5 pin 6 pin 7 pin 8
Tx + Tx - Rx + Rx -
white
orange
orange blue green white
green
white
blue
white
brown
brown
               
               
               
               

RJ45 wired for T568B pattern (AT&T 258A) most common

pin 1 pin 2 pin 3 pin 4 pin 5 pin 6 pin 7 pin 8
Tx + Tx - Rx + Rx -
white
orange
orange white
green
blue white
blue
green white
brown
brown
               
               
               
               

RJ45 wired for T568A pattern

pin 1 pin 2 pin 3 pin 4 pin 5 pin 6 pin 7 pin 8
Tx + Tx - Rx + Rx -
white
green
green white
orange
blue white
blue
orange white
brown
brown
               
               
               
               

Crossover cable

To make a crossover cable wire one side with T568A and the other side with T568B.