RJ45 refers to a type of connector commonly used for Ethernet networking cables. The term “RJ45” stands for Registered Jack 45, and it’s a standardized physical interface for connecting networking equipment, such as computers, routers, and switches, to a local area network (LAN) or the internet.
The RJ45 connector looks similar to a telephone connector (RJ11), but it is larger in size and has eight pins instead of four. Ethernet cables with RJ45 connectors are widely used for wired networking in homes, offices, and data centers.
It’s important to note that RJ45 specifically refers to the connector, not the cable itself. Ethernet cables with RJ45 connectors are often categorized by their performance standards, such as Cat5e, Cat6, Cat6a, or Cat7, which indicate the cable’s capabilities in terms of data speed and bandwidth.