What Is a RJ-45 Port?
An RJ-45 port is a data port often found on computers, network routers, switches and hubs. It is commonly used for an Ethernet or serial connection with an 8 position 8 conductor (8P8C) jack. In the past, some modems and telephones included an RJ-45 port that used a true Registered Jack 45 (RJ45) jack. Although the 8P8C jack is not identical to the RJ45, the data port commonly retains the RJ-45 name.
