@MalmoTP What's your extra air router - if you've bought 1-pack unit it should be R5 (the main unit with two ethernet ports). Have you tried to use the WPS method (video) ? Method 3: Via the WPS...

@xyloPL Check here for newer FW releases.

@WololoWololo Putting a range extender in between the router and another range extender will improve only the wireless signal strength but not the network throughput. With every additional range...

@paul79 Here you go.

@MBuch If your power led is blinking that means the RE either is starting up or its FW has been upgraded. Before setting up the RE you shoukld wait for power led turns solid on (try to reset the RE...

@m_shehab Which wireless chanel your main router trasmits on 5 Ghz ? After clicking on "Reselect Main Network" do you see your main router's 5Ghz SSID ? If you put RE300 closer to your main router do...