1000Mbps High Speed RJ45 Internet Splitter Adapter for increasing the LAN access for your home network. This will take one input from your router, and turn it into two outlets for your devices. It is made to be used with standard RJ45 connectors and is very simple to install.
You simply use a network cable to connect this unit to your router from the single port side, then plug in the two devices you want to use into the two ports on the other side.
Instructions for setting up your connections are mostly automatic, but instructions are provided in case you have problems.