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Difference between RJ45 and RJ48

Difference between RJ45 and RJ48

There are several types of RJ connectors, but the two most common are RJ45 and RJ48. Both of these connectors have different purposes, and it’s important to understand the difference between them.

What is RJ45?

RJ45 is a type of connector commonly used for Ethernet networking. It is a modular 8-pin connector that uses twisted-pair cables to transmit data. RJ45 connectors are available in a variety of different shapes and sizes, but they all have 8 pins arranged in 2 rows of 4. The most common type of RJ45 connector is the Ethernet connector, which is used to connect computers to Ethernet networks. Other types of RJ45 connectors include telephone connectors, serial connectors, and video connectors. While RJ45 connectors are not the only type of connectors used for Ethernet networking, they are by far the most popular. This is due to their flexibility and compatibility with a wide range of devices.

What is RJ48?

RJ48 is a standard for regenerative repeater jacks used in telecommunications. The RJ48 standard was developed by the International Telecommunications Union (ITU) and published in 1992. RJ48 connectors are used to connect two pieces of telecommunications equipment, typically a telephone and a computer. RJ48 cables are typically made of twisted-pair copper wire and are used to carry data signals. The RJ48 standard specifies the size, shape, and pinout of RJ48 connectors. RJ48 connectors are available in two versions: Male and Female. Male RJ48 connectors have two ground pins and four signal pins, while female RJ48 connectors have four ground pins and two signal pins. RJ48 cables are typically terminated with RJ45 connectors.

Difference between RJ45 and RJ48

There is a lot of confusion surrounding the differences between RJ45 and RJ48 connectors. Both are used to connect network cables, but they have slightly different designs and functions. Whereas RJ45 connectors have eight contacts and are typically seen on Ethernet cables, RJ48 connectors have six contacts and are often used in WAN applications. Another key difference is that RJ48 connectors should always be terminated as balanced lines, while RJ45 connectors can also be terminated as unbalanced lines. Ultimately, the choice of which type of connector to use will depend on your specific network needs and preferences. Whether you’re looking for greater stability or faster data transfer rates, there is likely to be an appropriate connector type for your situation.


RJ45 and RJ48 are both types of connectors used in telecommunications. The primary difference between the two is that RJ45 uses an 8-pin modular connector, while RJ48 uses a 12-pin modular connector. Both connectors are used to terminate twisted pair cables, but RJ48 is typically used for higher-speed applications. If you’re looking for a high-speed connector for your next telecommunications project, RJ48 should be your go-to option.

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