rockspace extender setup is a very simple process. However, there are two essential steps that you must follow before anything else. The first step for your rockspace WiFi extender setup is to unpack it from the box and make sure that you have all the necessary accessories in place. Then, connect one end of an Ethernet cable to an open port on your existing router or modem and then connect the other end of the Ethernet cable to one of the four LAN ports on the WiFi extender.