What does each Wire in an Ethernet Cable do Leave a comment

Ethernet is a set of computer networking technology. It is commonly used to connect devices to a local network and give internet connection Coaxial wires were used in older Ethernet setups. Twisted pair or fiber optic cables are used in today’s networks. Because twisted pair cables are so widely used in Ethernet computer networks, the word “Ethernet cable” has become associated with this type of cable. They connect to Ethernet ports on a number of different devices.

An Ethernet cable is most commonly used to connect a WIFI router or modem to an internet or a phone line. It can also be used to hardwire items that require the internet or a network to function, such as televisions, laptops, and other electronic gadgets.


A Category 5 cable is a type of twisted pair cable used for Ethernet. Inside the cable jacket, there are eight separate 24-gauge copper wires organized into four pairs. Signal interference from external sources such as fluorescent bulbs or radios, along with internal interference or crosstalk from other pairs, is reduced with this cabling structure.

Each wire in an ethernet cable functions:

This wire configuration is used to connect computers to networking devices like hubs and switches. This is used to connect computers to one another directly. A standard ethernet network cable is made up of four pairs of wires, for a total of eight wires. In most cases, 10Mbps or 100Mbps ethernet requires only four of the eight wires, or two pairs.

  • A modern Ethernet twisted-pair cable with an 8P8C connection has eight total wires braided into four pairs.
  • For 1000Base-T/GigE signaling at rates up to 1 Gbps, all eight wires can be used, but only four are required 4 are required for either 10Base-T signaling at rates up to 10 Mbps.

Some CCTV systems and even network systems will combine the four pairs into a single group of two pairs for network connections, while the remaining two pairs will be utilized to transfer electrical power to a remote device through simple power injectors.

PoE, on the other hand, will not work if the building wiring has been split apart. However, because they need two devices, they divided the wire at both ends into two groups of two pairs, allowing them to connect two different devices to the network.

  • In this situation, you can only utilize a switch at the far end to add more connections as needed
  • The total available bandwidth is still limited to 100Mbps in half-duplex mode and 200Mbps in full-duplex mode.

What is the difference between a 4 wire and an 8 wire ethernet cable?

Four-wire cables have one transmitting twisted pair and one receiving. In reality, at short distances, two independent 100-megabit Ethernet ports might share the same eight-wire connection.

The required category level for eight-wire twisted pair cables is 1000 megabits per second or higher. To transmit, two pairs are utilized, and to receive, two pairs are used. In one direction, each pair handles half of the total bandwidth.

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