RJ45 is a standardized connector commonly used for Ethernet networking. It features eight pins that allow for the transmission of data over twisted-pair cables, making it essential for connecting devices like computers, routers, and switches in local area networks (LANs). The RJ45 connector is often found at the end of network cables, enabling reliable communication between devices. It is designed to fit into a corresponding port, ensuring a secure connection. This connector is widely used in both residential and commercial settings, facilitating internet access and data transfer.