Q:

How do you wire an RJ45 Ethernet connector?

A:

Quick Answer

Wiring an RJ45 Ethernet cable requires only a few tools and knowing whether you need a straight-through or crossover cable. Straight-through cables connect different types of devices and have the same colored cable order at both ends: orange-white, orange, green-white, blue, blue-white, green, brown-white, brown. Crossover cables connect similar devices and have the same pin out order as straight-through on one end and the following on the other end: green-white, green, orange-white, blue-white, orange, brown-white, brown.

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Full Answer

Category 5 or CAT 5e cable, crimpable RJ-45 connectors, an RJ-45 crimping tool and scissors are all you need to make an Ethernet cable. Beyond that, you need only know whether to use a straight through or a crossover cable. If you are connecting two different device types, like a computer to a DSL or cable modem, use a straight through cable. To connect two similar device types, like a PC to another PC, use a crossover cable.

Straight through cables should be made to follow the TIA/EIA Standard 568B pinout or color cable order to ensure compatibility with other cables and equipment. The pinout order can be seen at the connectors as the colors of the wires making up the cable laid out flat. Functionally, any order can be used as long as they are the same at both ends for a straight-through cable, but not adhering to a standard creates unnecessary confusion. For crossover cables, use the 568A standard on one end and 568B on the other end.

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