ASUS RT-AC66U-B1 Wireless-AC1750 Dual Band Gigabit Router Quick Start Guide

June 12, 2024
Asus

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ASUS RT-AC66U-B1 Wireless-AC1750 Dual Band Gigabit Router

ASUS RT-AC66U-B1 Wireless-AC1750 Dual Band Gigabit Router-
product

Package contents

  • RT- AC66U B1
  • Network cable
  • Support CD (User Manual/utilities)
  • AC adapter
  • Quick Start Guide
  • Warranty card

NOTE: If any of the items are damaged or missing, contact your retailer.

A quick look

ASUS RT-AC66U-B1 Wireless-AC1750 Dual Band Gigabit Router-fig-
\(2\)

  1. USB 3.0 port
  2. LAN LED
  3. WAN LED
  4. 2.4GHz/5GHZ LED
  5. Power LED
  6. Power (DC-IN) port
  7. Power switch
  8. USB 2.0 port
  9. Reset button
  10. WAN port
  11. LAN ports
  12. WPS button

NOTES:

USB External HDD/Flash disk:

  • The wireless router works with most USB HDDs/Flash disks up to 2TB and supports read-write access for FAT16, FAT32, EXT2, EXT3, and NTFS.
  • To safely remove the USB disk, launch the web GUI (http://router.asus.com), then in the Network Map page’s upper right corner, click the USB icon and click Eject USB 1.
  • Incorrect removal of the USB disk may cause data corruption.
  • For the list of file system and hard disk partitions that the wireless router supports visit http://event.asus.com/networks/disksupport
  • For the list of printers that the wireless router supports, visit http://event.asus.com/networks/printersupport

Positioning your wireless router

For the best wireless signal transmission between the wireless router and the
network devices connected to it, ensure that you:

  • Place the wireless router in a centralized area for maximum wireless coverage for the network devices.
  • Keep the device away from metal obstructions and away from direct sunlight.
  • Keep the device away from 802.11g or 20MHz only Wi-Fi devices, 2.4GHz computer peripherals, Bluetooth devices, cordless phones, transformers, heavy-duty motors, fluorescent lights, microwave ovens, refrigerators, and other industrial equipment to prevent signal interference or loss.
  • To ensure the best wireless signal, orient the three detachable antennas as shown in the drawing below.
  • For optimum performance, adjust the internal cooling system. Refer to the user manual for details.
  • Always update to the latest firmware. Visit the ASUS website at  http://www.asus.com to get the latest firmware updates.

Before you proceed

Unplug and disconnect the wires/cables from your existing modem setup and release your computer’s outmoded IP address.

ASUS RT-AC66U-B1 Wireless-AC1750 Dual Band Gigabit Router-fig-
\(4\)

  • Unplug the AC adapter from the power outlet and disconnect it from your cable/ADSL modem.
  • Disconnect the network cable from your cable/ADSL modem.
  • Reboot your computer (recommended).

WARNING! Before disconnecting the wires/cables, ensure that your cable/ADSL modem has been turned off for at least two minutes. If your modem has a backup battery, remove it as well.

Set up your wireless environment.

ASUS RT-AC66U-B1 Wireless-AC1750 Dual Band Gigabit Router-fig-
\(5\)

  • Insert your wireless router’s AC adapter into the DC-IN port and plug it into a power outlet.

  • Using the bundled network cable, connect your computer to your wireless router’s LAN port.
    IMPORTANT! Ensure that the WAN and LAN LEDs are blinking.

  • Using another network cable, connect your modem to your wireless router’s WAN port.

  • Insert your modem’s AC adapter into the DC-IN port and plug it into a power outlet.

Disable some settings on your computer.

  • Disable the proxy server, if enabled.
  • Set the TCP/IP settings to automatically obtain an IP address.
  • Disable the dial-up connection, if enabled.

NOTE: For more details on disabling your computer settings, refer to Frequently Asked Questions (FAQs).

Getting started

  • Configure your wireless settings via the wireless router’s web graphics user interface (web GUI).

    • Launch your web browser such as Internet Explorer, Firefox, Google Chrome, or Safari ASUS RT-AC66U-B1 Wireless-AC1750 Dual Band Gigabit Router-fig- \(6\)NOTE: If QIS does not launch automatically, follow these steps to manually launch QIS:
    • On your web browser, key in http://router.asus.com and run the Quick Internet Setup (QIS) Wizard again.
    • Disable the proxy settings, dial-up connection, and set your TCP/IP settings to automatically obtain an IP address. For more details, refer to the FAQs section or use the Setup Wizard in the support CD for auto-diagnosis
  • The wireless router’s Quick Internet Setup (QIS) feature automatically detects if your ISP connection type is Dynamic IP, PPPoE, PPTP, L2TP, and Static IP. Key in the necessary information for your connection type.
    NOTE: The auto-detection of your ISP connection type takes place when you configure the wireless router for the first time or when your wireless router is reset to its default settings.
    IMPORTANT! Obtain the necessary information about your Internet connection type from your Internet Service Provider (ISP).

  • Assign the network name (SSID) and security key for your 2.4GHz and 5GHz wireless connection. Click Apply when done.

  • Your Internet and wireless settings are displayed. Click Next to continue.

  • Read the wireless network connection tutorial. When done, click Finish.

NOTE: You can assign a network name with up to 32 characters.

TROUBLESHOOTING (FAQs)

After following the steps, I still cannot access the wireless router’s web graphics user interface (web GUI) to configure the wireless router settings.

Disable the proxy server, if enabled.

Windows® 7

  1. Click Start > Internet Explorer to launch the web browser.
  2. Click Tools > Internet options > Connections tab > LAN settings.
  3. From the Local Area Network (LAN) Settings screen, untick Use a proxy server for your LAN.
  4. Click OK when done.

MAC OS


  1. From your Safari browser, click Safari > Preferences > Advanced > Change Settings…
  2. From the Network screen, deselect FTP Proxy and Web Proxy (HTTP).
  3. Cllick Apply Now when done.

NOTE: Refer to your browser’s help feature for details on disabling the proxy server.

Set the TCP/IP settings to automatically obtain an IP address.

Windows® 7

  1. Click Start > Control Panel > Network and Internet > Network and Sharing Center > Manage network connections.
  2. Select Internet Protocol Version 4 (TCP/IPv4), then click Properties.
  3. To obtain the iPv4 IP settings automatically, tick Obtain an IP address automatically.
  4. Click OK when done.

MAC OS

  1. Click the Apple icon located on the top left of your screen.
  2. Click System Preferences > Network > Configure…
  3. From the TCP/IP tab, select Using DHCP in the Configure IPv4 dropdown list.
  4. Cllick Apply Now when done.

NOTE: Refer to your operating system’s help and support feature for details on configuring your computer’s TCP/IP settings.

Disable the dial-up connection, if enabled.

Windows® 7

  1. Click Start > Internet Explorer to launch the browser.
  2. Click Tools > Internet options > Connections tab.
  3. Tick Never dial a connection.
  4. Click OK when done.

NOTE: Refer to your browser’s help feature for details on disabling the dial-up connection settings.

Close all running web browsers.

The client cannot establish a wireless connection with the router.

Out of Range:

  • Put the router closer to the wireless client.
  • Try to change the channel settings.

Authentication:

  • Use wired connection to connect to the router.
  • Check the wireless security settings.
  • Press the Reset button at the rear panel for more than five seconds.

Cannot find the router:

  • Press the Reset button at the rear panel for more than five seconds.
  • Check the setting in the wireless adapter such as SSID and encryption settings.

Cannot access the Internet via wireless LAN adapter.

  • Move the router closer to the wireless client.
  • Check whether the wireless adapter is connected to the correct wireless router.
  • Check whether the wireless channel in use conforms to the channels available in your country/area.
  • Check the encryption settings.
  • Check if the ADSL or Cable connection is correct.
  • Retry using another Ethernet cable.

If the ADSL “LINK” light blinks continuously or stays off, Internet access is not possible – the Router is unable to establish a connection with the ADSL network.

  • Ensure that all your cables are all properly connected .
  • Disconnect the power cord from the ADSL or cable modem, wait a few minutes, then reconnect the cord.
  • If the ADSL light continues to blink or stays OFF, contact your ADSL service provider

Network name or encryption keys are forgotten.

  • Try setting up the wired connection and configuring the wireless encryption again.
  • Press the Reset button of the wireless router for more than five seconds.
  • Factory default settings:
    User name / Password:

admin / admin

| IP address:

http://router.asus.com

| SSID:

Check the rating label on the back side of your router

---|---|---

Where can I find more information about the wireless router?

SUPPORT HOTLINE

Area| Hotline Number| Support Languages| Availability
Taiwan| 0800-093-456;

02-81439000

| Traditional Chinese| Mon. to Fri.

9:00-12:00;

13:30-18:00

USA/

Canada

| 1-812-282-2787| English| Mon. to Fri.

8:30-12:00am EST (5:30am-9:00pm PST)

Sat. to Sun.

9:00am-6:00pm EST (6:00am-3:00pm PST)

Brazil| 4003 0988 (Capital)| Portuguese| Mon. to Fri.

9:00am-18:00

0800 880 0988

(demais localidades)

FREQUENTLY ASKED QUESTIONS

What is the maximum wireless speed supported by the ASUS RT-AC66U-B1 Wireless- AC1750 Dual Band Gigabit Router?

The maximum wireless speed supported by the ASUS RT-AC66U-B1 router is 1750 Mbps.

Does the ASUS RT-AC66U-B1 router support both 2.4GHz and 5GHz bands?

Yes, the ASUS RT-AC66U-B1 router supports both 2.4GHz and 5GHz bands.

How many Gigabit Ethernet ports does the ASUS RT-AC66U-B1 router have?

The ASUS RT-AC66U-B1 router has four Gigabit Ethernet ports.

Does the router support USB connections for file sharing and network storage?

Yes, the ASUS RT-AC66U-B1 router has two USB ports that support file sharing and network storage.

Can you set up a guest network on the ASUS RT-AC66U-B1 router?

Yes, the router allows you to set up a guest network for visitors to use without accessing your main network.

Does the ASUS RT-AC66U-B1 support Quality of Service (QoS) settings?

Yes, the router supports Quality of Service (QoS) settings, allowing you to prioritize certain types of internet traffic.

What encryption standards are supported by the router for wireless security?

The ASUS RT-AC66U-B1 supports WPA2-PSK, WPA-PSK, and WEP encryption standards for wireless security.

Is it possible to set up a VPN (Virtual Private Network) on the router?

Yes, the ASUS RT-AC66U-B1 supports VPN server and client functionalities for setting up a VPN.

Can you remotely manage the router using a mobile app?

Yes, you can remotely manage the router using the ASUS Router app on your mobile device.

What is the maximum range of the ASUS RT-AC66U-B1 router?

The router's range can vary depending on the environment, but it is designed to cover a typical home or small office.

Does the router have parental controls for managing internet access for children?

Yes, the ASUS RT-AC66U-B1 has parental controls that allow you to manage and restrict internet access for specific devices.

Can the router be used as a wireless repeater to extend the Wi-Fi range?

Yes, the router has a repeater mode that allows it to extend the existing Wi- Fi network.

What firmware updates are available for the ASUS RT-AC66U-B1 router?

The availability of firmware updates may change over time. Check the ASUS website or use the router's interface to check for the latest firmware version.

Is the router compatible with IPv6?

Yes, the ASUS RT-AC66U-B1 is compatible with IPv6.

Can you set up a personal FTP server using the router's USB ports?

Yes, the router supports FTP server functionality when a USB storage device is connected.

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