ALife RJ45 Ethernet Splitter allow 2 computers to share high speed DSL, cable modem or other Ethernet ports.NOTE: Don't support 2 computers that connect to the internet simultaneously, ONLY 1 output port is working. | ALife RJ45 Ethernet Splitter is not a switch so that it can not implement 2 computers sharing the internet at the same time. | Transmission is more stable, it has a superior connection and transmission. | Application: When you often use a laptop in 2 different fixed position, using this RJ45 splitter, you don't have to worry about no Internet in your rooms. | Installation simple and easy to use.