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I have a ADSL Wireless Router (ZTE ZXV10 W300) connected to internet. My laptop is connected to the router via wireless network. When I check the Network Map (in Windows 7) it shows another wireless router and a computer (which I do not own) and Routers are connected through an Unknown device.

Green box shows the part I can identify

I guessed this router is somewhere in my neighbourhood, so to disconnect it I restarted my router and even changed the wireless network shared key, but it keeps showing in my network map..

Note: I tried to ping the Unknown pc IP, but it can not be reachable.

Is the routers really connected each other? how to disconnect this unknown network from my network?

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Try to change the Channel your wifi router uses because both routers may be overlapping

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You are confusing physical layer noise with message integrity. Information at that level would not be affected by overlapping WiFi channels. – armani Apr 9 '15 at 19:45

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