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![What should I do if the internet light is off or there is an error message “ WAN Port Unplugged” on the TP-Link router page? What should I do if the internet light is off or there is an error message “ WAN Port Unplugged” on the TP-Link router page?](https://static.tp-link.com/WeChat_Image_20201230155137_1609315121936v.png)
What should I do if the internet light is off or there is an error message “ WAN Port Unplugged” on the TP-Link router page?
![An Internet or LAN port isn't working correctly on my router. How do I perform a loopback test to check the port? | Answer | NETGEAR Support An Internet or LAN port isn't working correctly on my router. How do I perform a loopback test to check the port? | Answer | NETGEAR Support](https://www.downloads.netgear.com/files/answer_media/DITAToo/Knowledge%20Base%20Articles%20%28New%29/CHP%20Products/Routers/RAX20_loopback_test.png)
An Internet or LAN port isn't working correctly on my router. How do I perform a loopback test to check the port? | Answer | NETGEAR Support
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