How To Configure Asus Rt-Ac51u Router Setup?

Asus Rt-Ac51u Router Setup

Asus RT-AC51U is a dual-band wireless router. It offers up to 733 Mbps speed. It is equipped with two high-gain antennas for excellent wireless coverage. To perform the Asus RT-AC51U router setup, read the following section.

1. Checking the package components:

Before you start with the installation steps, check whether the following components are available:

  • The Asus RT-AC51U wireless router
  • The network cable (RJ-45)
  • Support CD
  • Quick Start Guide
  • AC adapter
  • Warranty card

2. Hardware Setup:

The hardware setup part involves connecting your devices. Follow these steps to start the Asus RT-AC51U router set up:

  • Insert one end of the router’s AC adapter into the DC-IN port of the router.
  • Plug the other end of this AC adapter into an electrical socket.
  • Connect your computer to the router’s LAN port using the bundled network cable. Now, make sure that the WAN and the LAN LEDs are blinking/flashing.
  • Connect the modem to the router’s WAN port using another network cable.
  • Take the modem’s AC adapter and insert one of its ends into the DC-IN port of the modem. Plug the other end of this adapter into the electrical outlet.

Important Note: Prior to proceeding, disconnect all the cables from the existing modem setup. Wait patiently for a couple of minutes. Then, reconnect all the cables.The hardware part of the Asus Rt-Ac51u router setup is now complete. Let us now continue with the software part, which involves using QIS (Quick Internet Setup).

3. Logging into the router:

  • First, you should open a web browser on your computer.
  • The QIS webpage should launch automatically. If it does, choose one of the following options:
  • Automatic IP (DHCP)
  • PPPoE
  • PPTP
  • L2TP
Asus Rt-Ac51u Router Settings

The above options are the connection types.

Select one of them and continue with the on-screen instructions to complete the Asus RT-AC51U router se tup.

  • If the QIS webpage does not launch automatically, you need to disable the web browser’s proxy settings.
  • To manually launch the QIS webpage, follow these steps. These instructions will help you continue with the Asus RT-AC51U router set up:
  • In the address bar of the web browser, type Or else, you can use
  • Make use of the default credentials to log into the user interface after the Asus Rt-Ac51u router setup. Both your default username and password are “admin” (without the quotes).

Related Articles