RT-AC51U print

Router info

OpenWrt supported: yes (info)
dd-wrt supported: no
Cpu: 580 MHz
RAM: 64 MiB
Flash: n/a
WiFi: Gigabit (abgn+ac)
WAN-ports: 1
WAN-speed: 100mbps (10/100)
ETH-ports (LAN): 4
ETH-speed: 100mbps (10/100)
USB-ports: 1

Hard reset instructions for ASUS RT-AC51U

If your RT-AC51U router is not working as it should, dropping connections or not being responsive, you should first do a reset of the router to see if the problems persist. Other scenarios where you might want to reset your router is if you've forgotten the password or misconfigured it and can't get access anymore.
Your can reset your ASUS RT-AC51U in the following way(s):

Through the web-interface

  1. Open your browser and navigate to the default gateway ip (check default settings below)
  2. Sign in to the web-interface with the username and password you have selected, or try the defaulr username and password (check default settings below)
  3. Under the advanced settings menu, select administration
  4. Find the link "Restore/Save/Upload Setting"
  5. Beside Factory default click on Restore
  6. If prompted, click ok

With the reset button on the router

  1. Locate the reset button on the backside of your unit
  2. with a sharp object, e.g. a paperclip or pencil, press and hold the reset button for 5s or until the power led starts flashing

The 30-30-30 reset

If the above instructions don't work you can always try the 30-30-30 reset as follows:
  1. When router is powered on, press the reset button and hold for 30 seconds. (Use a paper clip or something sharp)
  2. While holding the reset button pressed, unplug the power of the router and hold the reset button for 30 seconds
  3. While still holding the reset button down, turn on the power to the unit again and hold for another 30 seconds.
This process usually works for resetting any router to it's factory setting. If that doesn't work be sure to check out the questions and answers incase someone else has had similar problems resetting their router.

Default factory settings for ASUS RT-AC51U

If you have performed a reset of your RT-AC51U device or not changed the defaults, you should be able to access it with the following settings:

Default Network name (SSID): ASUS,ASUS_5G
Default Gateway IP: 192.168.1.1
Default admin username: admin
Default admin password: admin
Default subnet mask: 255.255.255.0
Default DNS server: 192.168.1.1
Note: If you are using the default settings you should change them to increase security and prevent unathorized access to your network.

User Manuals for RT-AC51U

Do you still have questions concerning the router that you can't find online? You can always try the manuals where most questions should be answered from the manufacturer. Below are the device manuals available for your RT-AC51U.

Name Type Size Date
save Users Guide (click to download) pdf 3.87 MB June 22, 2016
save Users Manual (click to download) pdf 4.04 MB Aug. 4, 2016
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