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network - Ethernet connection between rooms doesn't work: LEDs 2, 3 and 4 don't blink on cable tester - Home Improvement Stack Exchange
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An Internet or LAN port isn't working correctly on my router. How do I perform a loopback test to check the port? - NETGEAR Support
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An Internet or LAN port isn't working correctly on my router. How do I perform a loopback test to check the port? - NETGEAR Support
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