Asus RT-AC66U 802.11ac Dual-Band Wireless-AC1750 Gigabit Router
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ASUS and You

  • Overview

    The ASUS RT-AC66 Dual-Band Wireless-AC1750 Gigabit router brings you into the next generation of wireless connectivity with leading 802.11ac Wi-Fi connectivity—5G Wi-Fi­—that's up to 3 times faster than current wireless N speeds. One of the first of its kind, the RT-AC66 gives you a combined 1.75 Gbps of wireless data from the 2.4 GHz and 5 GHz streams for unprecedented wireless performance when gaming online, streaming HD media, and other bandwidth-intensive tasks. Coupled with ASUS AiRadar technology for expanded wireless coverage and ASUSWRT that makes set up easy and offers a robust feature set of networking customization settings, the ASUS RT-AC66 is the pioneering router to elevate your Internet surfing experience.

Features At-A-Glance

  • Key Features

    • Ultra-high-speed wireless performance with 5G Wi-Fi 802.11ac for transfer speeds up to 1.3 Gbps—3 times faster than current wireless N
    • 2.4 GHz and 5 GHz concurrent dual-band transmissions for strong signal strength and compatibility
    • Attachable external antenna for up to 20% further coverage*
    • 256MB RAM for faster processing
    • Gigabit Ethernet ports for the fastest, most reliable internet performance
    • Download Master for wireless data storage and access to router-connected USB storage devices
    • AiRadar for expanded wireless coverage throughout a multi-level building
    • Multi-Function twin USB ports for file sharing, printer networking, and 3G connectivity
    • IPv6 enabled for future proof Web surfing compatibility
    • ASUSWRT for easy 2-step setup, signal monitoring, and network application control

Praised for Networking Excellence

  • “Highest Customer Satisfaction with Wireless Routers in the U.S.” - J.D. Power

    ASUS achieved the highest scores in 6 study factors: Reliability, Wi-Fi range, Security, Capabilities, Speed of upload/download file, Restore connection easily, and Variety of features.

    ASUS received the highest numerical score among wireless routers in the J.D. Power 2015 Wireless Router Satisfaction Report, based on 2,716 responses from 8 companies measuring satisfaction with wireless routers surveyed November-December 2015. Your experiences may vary. Visit
  • Readers' Choice Award Router Brand 5 Years Running

    PC Mag has awarded ASUS its Reader’s Choice Award for 5 consecutive years.

    "Asus's excellent ease of setup ratings show that users are getting a great experience right from the start."

    Reprinted from our official site with permission. 2015 Ziff Davis, Inc. All Rights Reserved.


  • The New Standard in Wi-Fi

    With 5 GHz speeds up to 1.3 Gbps—3 times faster than most current wireless-n signals, new 5G Wi-Fi 802.11ac standard on the RT-AC66 router delivers amazing wireless performance for seamless HD streaming, online gaming, and other bandwidth-intensive tasks. Additionally, the RT-AC66 supports the new IPv6 standard for better packet transmission and addressing.
  • Dual-Band Operation and Expanded Coverage

    Working on both the 2.4 GHz and 5 GHz, the RT-AC66 future proofs your connectivity as one of the world’s first routers to feature 5G Wi-Fi and still features compatibility for current wireless-N devices at up to 450 Mbps. ASUS AiRadar technology amplifies transmission in all directions to ensure you have strong signal coverage throughout a multi-level home. What’s more, you can expand your wireless signal up to 20% further with the attachable external antenna*.
  • Extensive Networking Features

    The RT-AC66 is made for ease of use and user optimization to get you setup within seconds out of the box and a personalized experience. With ASUS Quality of Service­—QoS, set bandwidth priority by your set applications and tasks. Download Master lets you continue downloads even after you turn off a PC for even greater convenience. With robust parental controls, customize access up to eight SSIDs and set URL filters to prevent access to unwanted sites. Traffic monitoring lets you check your Web usage in a clear graphical interface to help keep you from exceeding any data allotments or to better customize your data plan with your Internet Service Provider.
  • Multifunctional Built-in USB Ports

    With its twin USB ports, the RT-AC66 becomes a true multi-role device. Full media device compatibility affords smooth connectivity with a variety of entertainment platforms, including game consoles, Blu-ray players, smart TVs, and set-top boxes. The RT-AC66 can also serve as a dedicated FTP server and printer server, letting users share resources for greater productivity while reducing costs as there is no need to buy standalone server hardware.

  • Versatile Design

    The slim RT-AC66 fits nearly anywhere, includes a stand, and boasts 3 external antennas that you can position for enhanced signal reception. The design chassis is also VESA wall mountable to place it behind monitors and other areas.
  • 2 Year ASUS North America Warranty

    • 2 year North America warranty
    • 1-way free standard shipping
    • 24/7 tech support

What’s in the Box

    • RT-AC66U Dual-Band Wireless-N1750 Gigabit Router
    • Router Stand
    • RJ-45 Cable
    • Support CD (User Manual and Utility Software)
    • Power Adapter
    • Warranty Card
    • Quick Start Guide


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Network Standard:

IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac, IEEE 802.3u, IPv4, IPv6

Data Rate:

802.11a : 6,9,12,18,24,36,48,54Mbps
802.11b : 1, 2, 5.5, 11Mbps
802.11g : 6,9,12,18,24,36,48,54Mbps
802.11n : up to 450Mbps
802.11ac: up to 1300Mbps

Antenna:Detachable antenna x 3
Operating Frequency:

2.4G~2.4835GHz /5.1~5.8GHz


64-bit WEP, 128-bit WEP, WPA2-PSK, WPA-PSK, WPA-Enterprise, WPA2-Enterprise

Firewall & Access Control:

Firewall: SPI intrusion detection,DoS protection 
Access control: Parental control, Network service filter, URL filter, Port filter

UPnP, DLNA, DNS Proxy, NTP Client, DDNS, Port Triger, Virtual Server, DMZ

VPN Support:
IPSec Pass-Through
PPTP Pass-Through
L2TP Pass-Through
WAN Connection Type Internet connection type : Automatic IP, Static IP, PPPoE(MPPE supported), PPTP, L2TP
Dual Link support 
Multicast Proxy support


.Download master
- support BT, NZB, HTTP, ED2K
- support encryption, DHT, PEX and magnet link
- upload and download bandwidth control
- download scheduling 
.Media server:
Image: JPEG
Audio: mp3, wma, wav, pcm, mp4, lpcm, ogg
Video: asf, avi, divx, mpeg, mpg, ts, vob, wmv, mkv, mov
User definable rules for IP/MAC/Port. Upload and Download bandwidth management.

ACK/SYN/FIN/RST/ICMP with Highest priority
.Guest Network 
2.4GHz guest network x 3, 5GHz guest network x 3
.Printer Server: multifunctional printer support(Windows only), LPR protocol support
.File server: Samba and FTP server with account management
.PPTP VPN server
.Network map
.Traffic monitor


1 x RJ45 for 10/100/1000 BaseT for WAN, 4 x RJ45 for 10/100/1000 BaseT for LAN, Support Ethernet and 802.3 with max. bit rate 10/100/1000 Mbps and auto cross-over function(MDI-X)
USB 2.0 x 2


WPS Button, Reset Button, Power Button

LED Indicators:

PWR x 1
LAN x 4
WAN x 1
AIR x 2
USB x 1

Power Supply:

AC Input : 110V~240V(50~60Hz)
DC Output : 19 V with max. 1.58 A current


8.15 x 5.86 x 1.40 inches (WxDxH)

207 x 148.8 x 35.5 mm (WxDxH)


1 lbs (450 g)

About ASUS

  • ASUS aspires to deliver the incredible in everything it does. With more than 17,000 employees around the globe with a world-class R&D team of 5,500 engineers, ASUS is dedicated to the design and manufacture of products that perfectly meet the needs of today’s (and tomorrow’s) digital home and office. ASUS’ broad portfolio includes motherboards, graphics cards, displays, desktop PCs, all-in-one PCs, laptops, servers, wireless networking devices, tablets, smartphones and wearables. Driven by innovation and committed to quality, ASUS won 4,368 awards in 2015 and was named in Fortune’s list of the World’s Most Admired Companies1

    © 2016 ASUS Computer International. All Rights Reserved. ASUS is a registered trademark of ASUSTeK Computer. All specifications and terms are subject to change without notice. Please check with your supplier for exact offers on selected models. Products may not be available in all markets. Product may not be exactly as shown in photos. Actual colors may differ from their appearance due to variation of monitor restrictions and color processing. All trademarks are registered to their respective companies. ASUS shall not be liable for technical or editorial errors or omissions contained herein.
  1. 1 Ranked 4th in Computer Industry

General Information

Upgrade to the Next Generation

The ASUS RT-AC66U is a 5th generation dual-band Wi-Fi router with a total speed of up to 1.75Gbps, currently the fastest available! It utilizes the Broadcom 802.11ac Wi-Fi controller, working in both 2.4GHz and 5GHz. The 5GHz band works at up to 1.3Gbps, which exceeds current Gigabit wired transmission and is 3X faster than 802.11ac. The RT-AC66U offers smooth lag-resistant multitasking and super-fast streaming, while ASUS AiRadar intelligently strengthens wireless device connections via powerful amplification, offering future-proof optimized performance.

Wireless Specifications
Broadband Transmission Technology:Ethernet
Wireless LAN Standard:IEEE 802.11ac
ISM Band:Yes
UNII Band:Yes
ISM Minimum Frequency:2.40 GHz
ISM Maximum Frequency:2.48 GHz
UNII Minimum Frequency:5.10 GHz
UNII Maximum Frequency:5.80 GHz
Total Number of Antennas:3
Wireless Transmission Speed:1750 Mbit/s
Wireless Security:
  • 64/128-bit WEP
  • WPA2-PSK
  • WPS
Features:Quality of Service (QoS)

Number of Network (RJ-45) Ports:4
Network (RJ-11):No
PoE (RJ-45) Port:No
Management Port:No
Number of Broadband (RJ-45) Ports:1

Network & Communication
Ethernet Technology:Gigabit Ethernet
Network Technology:10/100/1000Base-T

Management & Protocols
Security Features:
  • DMZ
  • SPI
  • DoS Protection
  • Access Control
  • Parental Control
  • Network Service Filter
  • URL Filter
  • Port Filter
  • IPSec Pass-Throuth
  • PPTP Pass-Through
  • L2TP Pass-Through
  • PPPoE

Power Description
Input Voltage:19 V DC
Power Source:AC Adapter

Physical Characteristics
Form Factor:Desktop
Weight (Approximate):15.87 oz

Package Contents:
  • 802.11ac Dual-Band Wireless-AC1750 Gigabit Router
  • Router Stand
  • RJ-45 Cable
  • Support CD (User Manual and Utility Software)
  • Power Adapter
  • Quick Start Guide
  • Warranty Card
Certifications & Standards:
  • DLNA

IEEE Standards:

  • IEEE 802.11ac
  • IEEE 802.11a
  • IEEE 802.11b
  • IEEE 802.11g
  • IEEE 802.11n
  • IEEE 802.3
  • IEEE 802.3u
  • IEEE 802.3ab

Product images may differ from actual product appearance.
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Shipping Restrictions
  • This item cannot be shipped to PO Boxes.
  • This item can be shipped only within the U.S.

  • UPC: 886227214327 
  • Mfr's Part #: RT-AC66U