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Why is the network cable interface RJ45 and not USB type?

In the world of networking, the RJ45 interface has become the standard for Ethernet connections, while USB interfaces dominate in personal computer peripherals. Understanding why RJ45 is preferred over USB for network cables requires a look into their design, functionality, and historical context. Here’s an in-depth exploration of the reasons behind the dominance of RJ45 in networking over USB.

rj45 vs usb


1. Design and Functionality


RJ45:

The RJ45 interface is specifically designed for Ethernet networking. It uses an 8P8C (8 Position 8 Contact) connector, which means it has eight wires that can handle data transmission, power, and grounding. The design supports high-speed data transfer over long distances, making it ideal for both residential and commercial networking.

Key Features:


USB:

USB (Universal Serial Bus) interfaces are designed for general-purpose connections, primarily used to connect peripherals like keyboards, mice, and storage devices to computers. While USB can handle data transfer and power, it was not originally designed with networking as its primary function.

Key Features:


2. Data Transfer Speed and Stability


RJ45:


USB:


3. Historical Context and Industry Standards


RJ45:


USB:


4. Practical Considerations


RJ45:

USB:

rj45 vs usb


Conclusion


While USB offers versatility and convenience for connecting various devices, RJ45 remains the preferred choice for network cables due to its design, stability, and high-speed capabilities. The historical context and industry standards further cement RJ45’s role as the backbone of modern networking. As networking demands continue to grow, RJ45’s scalability and reliability ensure it remains a crucial component in the infrastructure of both residential and commercial networks.


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