You may switch off your router when you do not use the system, which causes the clicking noise. Please perform either of the below suggestions to remove such noise: * Always keep your router on even you do not use it * When you are not using the wireless connection between the system and the router, just check to ensure the wireless connection are the default settings (ad-hoc mode)

The information on this page applies to the following models: MCI500H/05 , MCI500H/12 .