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Reset the Asus RT-AC51U

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Setup Router Staff
November 16, 2022 (Last Updated: ) | Reading Time: 4 minutes

This article covers how to reset the Asus RT-AC51U router back to factory default settings. A router reset is very different than a router reboot. A reboot happens every time a router loses power. A Router Reset completely erases the router and returns it to factory settings.

Warning: Since this erases everything you have done to the router, there are some things you need to consider first. When you reset your router, the following will happen.

  • The router's login credentials are reset to factory defaults.
  • All WiFi login information and network names are reset.
  • Any ISP settings saved in your router will be removed. You may have to contact your ISP.
  • Any parental controls, firewall settings, or port forwards will be removed.

Since a router reset is such a drastic step, it should only be done as a last resort when you cannot recover your router's password using any other methods. Before you reset your router, you may want to try recovering your router password with our Router Password Finder.

Other Asus RT-AC51U Guides

This is the reset router guide for the Asus RT-AC51U Padavan 3.4.3.9-099. We also have the following guides for the same router:

Recover Password in Asus RT-AC51U

Instead of resetting your router back to factory settings, you may want to try running our Router Password Finder first.

Our Router Password Finder can recover your lost or forgotten router password without doing a full router reset, which can save you lots of time.

Router Password Finder - Lost or Forgotten Router Password Recovery Tool

Only after you have tried to recover your missing router username and password should you perform a full router reset.

Reset the Asus RT-AC51U

You can usually find a small reset button on either the back or the bottom of a router. Look at your router and try to find something that looks like this:

Router Reset Button

Yours may look slightly different, but they are usually tiny. If you find a pinhole on the back of the router then that may be the reset button. You will need a paper clip to push it.

Hold the reset button down for 10 seconds and watch the lights. You should notice that the blinking pattern of the lights on the front of the router changes after a few seconds. Keep holding the button as long as you want, it will not hurt anything to hold it down too long.

Keep in mind that this will completely reset your Asus RT-AC51U router.

This last step should only be taken if you have tried everything else, such as using our Router Password Finder software, which can recover lost or forgotten router passwords.

Login to the Asus RT-AC51U

After you are finished resetting your router, you need to login in using the original factory username and password. Our RT-AC51U Login Guide has all of the information that you need.

Change Your Password

Do not forget to change your router's default password when you log back into it. The factory default passwords for routers are very well known. You can follow our Choosing a Strong Password guide to help you pick a solid password for your router.

Tip: Write your new password down on a post-it note and stick it to the bottom of your router.

Other Asus RT-AC51U Guides

This isn't our only Asus RT-AC51U guide. We also have the following guides for this router.

This is the reset router guide for the Asus RT-AC51U Padavan 3.4.3.9-099. We also have the following guides for the same router: