This RJ45 Ethernet splitter 1 in 2 is used to connect two devices with an Ethernet cable to surf the internet simultaneously. Use this RJ45 splitter to easily convert RJ45 connectors into two RJ45 sockets. The RJ45 coupler is environmentally friendly and uses flame-retardant ABS shell rubber, gold-plated fully shielded network interface, thickened environmentally friendly PCB circuit board, and TVS eight-tube protection technology. The RJ45 splitter divides the cable into two groups to transmit data separately to solve the problem of network cable embedding in wiring engineering. It is purely a physical connection and does not have the function of assigning IP addresses. It cannot be the same as the switch or router. It must be used in pairs during installation. The RJ45 splitter connector has built-in 8 lightning protection tubes to prevent lightning from damaging your computer through the network. You can surf the internet safely during thunderstorms.