router 4G-AC55U print Wireless-AC1200 Dual-band Gigabit LTE Modem Router

The ASUS 4G-AC55U router has Gigabit WiFi, 4 Gigabit ETH-ports and 0 USB-ports.
It's also known as the ASUS Wireless-AC1200 Dual-band Gigabit LTE Modem Router.

Quick links:
Default password/Login
User Manuals

4G-AC55U router specifications (specs)

System specs
Cpu: 720 MHz
RAM: 128 MiB
Flash: 128 MiB
Custom firmwares: None
Connectivity
WiFi: Gigabit (abgn+ac)
WiFi bands: 2.4GHz & 5GHz
WiFi throughput: n/a
WAN: 1 Gigabit port
ETH: 4 Gigabit ports
USB-ports: 0

Hard reset instructions for ASUS 4G-AC55U

If your 4G-AC55U 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 4G-AC55U 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.
Note: It is worth reading more about how to reset routers with the 30 30 30 reset and what the risks and considerations are when resetting your router this way, instead of just rebooting it.

Default factory settings for ASUS 4G-AC55U

If you have performed a reset of your 4G-AC55U 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 ASUS login instructions
Default username: admin ASUS router default password list
Default 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 4G-AC55U

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 4G-AC55U.

Name Type Size Date
save User Manual-1 (click to download) pdf 5.14 MB Sept. 5, 2014
save User Manual-2 (click to download) pdf 5.6 MB Sept. 5, 2014

4G-AC55U Firmwares

Staying up to date with the latest firmware is a good idea to keep your router even more secure from various security flaws.
If you want to squeeze a little bit of extra functionality out of your router, consider flashing an open-source firmware like dd-wrt, openWRT or LEDE. Flashing a custom ROM can greatly increase the stability and functionality of your old router.
Following are the firmwares that we have identified existing for the ASUS 4G-AC55U:

ASUS stock firmware for the 4G-AC55U

Stock firmwares for the 4G-AC55U are available under the download section on the modem's support page. You can also refer to the router's manual for instructions on how to upgrade the firmware.