Article ID : 00031332 / Last Modified : 02/18/2016

What is an Ethernet cable?

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An Ethernet cable is a certain type of networking cable, often called a CAT 5 cable or RJ-45 cable, which connects home networking devices together through an interface that looks similar to a phone jack. An Ethernet cable looks like a phone cable but has more metal pins than a standard telephone cable, normally 8 pins or wires compared to 4 pins, and it clips into a slightly wider interface or jack just like a phone cable does.