The RJ45 Connector Cat 5e from Trusolid is a Data Connector. It is a . These type of connectors are also known as RJ connectors (registered jack connectors) or as modular connectors as they were helpful in making the telephone network of early days more modular. These connectors are used in lotts of applications, including data communications, consumer devices and industrial. The benefits of these connectors is that they are simple to terminate and are easy to plug and unplug.