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RJ45 Connector Pin-out

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RJ45 Connector Pin-out for EIA/TIA 568A Standard

The T568A straight configuration dates back to 1995 and is largely obsolete. It is incompatible with the more recent T568B standard unless used as a crossover cable. The crossover cable is wired T568A on one end and T568B on the other end.

Grouped and Sorted wires







RJ45 Connector Pin-out for EIA/TIA 568B Standard

The T568B straight configuration is the current wiring scheme for Ethernet cabling. The exception would be for the crossover cable which is wired T568A on one end and T568B on the other end.

Grouped and Sorted wires

For more detailed information visit wikipedia.org/wiki/TIA/EIA-568


** Tip **

Always use the proper tools and testers when assembling Ethernet cables:



Precision Cutters

Crimp Tool

Crimp Tool


Cable Testers

Testing the cable



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