RJ45 (Registered Jack 45) is a standard Ethernet connector used for wired networking. It is commonly found at the end of Ethernet cables and is used to connect computers, routers, switches, modems, and other network devices to a local area network or the internet.
An RJ45 connector contains eight pins that connect to four twisted pairs of wires inside an Ethernet cable. These twisted pairs transmit data signals efficiently while reducing interference and signal loss.
RJ45 connectors are used with Ethernet cable categories such as Cat5e, Cat6, and Cat6a, which determine network speed and performance. RJ45 is widely used in home networks, office environments, and data centers, making it a fundamental component of modern computer networking