What is the primary usage of the MT-RJ connector?

The MT-RJ connector is primarily designed for small form factor devices. This connector type is particularly beneficial in applications where space is limited, as it allows for a more compact connection compared to larger connectors. Its small size makes it ideal for high-density environments, such as data centers and telecommunications equipment, where maximizing the number of connections in a given area is crucial.

Additionally, the MT-RJ connector features a robust design that supports both multimode and single-mode fiber connections, making it versatile for different networking needs. Its compactness does not compromise performance, as it effectively minimizes insertion loss and back reflection.

In contrast, other options do not align with the primary characteristics and uses of the MT-RJ connector. For example, it is not specifically intended for audio and video applications or for outdoor fiber installations, which would typically require different connectors to accommodate environmental factors. The mention of large form factor devices also diverges from the MT-RJ's intended use, reinforcing its designation as a small form factor connector.