Instructions - (1) Use a Single Adapter: It can be Used as Ethernet Cable Extender, But Only Port 1 Available to be Used. (2) Use a Pair of Adapter: One Network can be Divided Into Two, Enabling Two Devices Online at the Same Time. Connection Example - If two computers need to access the Internet at the same time, an 8-core cable (or 8-core cable embedded in the wall) needs to be connected between two RJ45 splitters when the router is far away from the computer. Stable Transmission - The Network Splitter Ethernet Built-in Thick Environmental Protection PCB Circuit Board, Rj45 Eight-core Standard Jack, Gold-plated Pin Core, Integrated Mechanical Welding, More Stable Transmission Signal, Superior Contact and Transmission Performance, Ensure Signal Transmission, Durable. NOTE - This cat5 splitter and cat6 splitter can divide a network cable into two outputs. The signal of two cable groups will not interfere each other.