8

Asus RT-AC66U Review

True Score

84
83
8

Experts

90
4,888

Consumers

Product Awards

Top 10

GR Certified

Customer Favorite

Expert Rankings

The Asus RT-AC66U is a middle-of-the-road dual-band home router that issues fast upload speed and reliable connections However, it doesn’t come with a dedicated app for configuring settings.

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Table of Contents

Product Snapshot

Overview

The updated dual-band mesh Asus RT-AC66U was released in 2018, providing many features found on today’s best routers. The three antenna router operates on an 802.11ac and 1GHz dual-core CPU, capable of reaching max speeds of up to 450 Mbps on the 2.4 GHz band and 1,300 Mbps on the 5 GHz band. In terms of memory, it holds 256 MB of RAM. It also has download speeds that measure in at 233 Mbps on 5GHz and 88 Mbps on a 2.4 Mbps.

The router comes with a web interface for users to manage a handful of security features, parental controls, upgrade firmware, and network prioritization. The router also comes with a total of two USB ports and four LAN ports.

Consensus

our Verdict

The Asus RT-AC66U is a lower-tier dual-band mesh-supporting router for home use. It delivers strong upload speeds, asests confirm that the router delivers speeds of 109 Mbps (2.4 GHz band) and 322 Mbps (5 GHz band), in both respects, this puts it in the top 25% of the category. However, the router doesn’t support MIMO and has poor download speeds — 88.4 on a 2.4 GHz band and  233 Mbps on a 5 GHz band. The 5GHz speed ranks in the bottom 10% of our certified tested list of router reviews, while the 2.4 GHz speed ranks in the bottom half. Additionally, the router also has a limited connection range of 26.1 meters.

The router itself is easy to set up. The process takes users around ten minutes to install, and this can be done via a physical CD or through a web interface where they can select parental controls, manage security features, and create network profiles. However, there is no dedicated app, which can make it more difficult to configure settings. The router also has good connectivity, offering one USB 3.0 port, one USB 2.0 port, and four three LAN ports with link aggregation.

ReasonS to Buy

  • Good Upload Speed
    • The router’s upload speeds are impressive and work well for general use in smaller homes, as tests show they come in at 109 Mbps on 2.4 GHz and 322 Mbps at 5 GHz, which are both in the top 25% of the category.

  • Easy to Setup and Configure
    • Setting up the router is painless. Users can choose to install software via a CD or by using the web interface. The process takes about 10 minutes.

    • The interface also allows for easy configuration, such as setting up any of the six available guest WiFi networks, managing network storage, and parental controls.

Reason to Avoid

  • Subpar Download Speed
    • The ASUS RT-AC66U does not excel in creating hyper-fast performance for bandwidth-intensive activities. Tests show that at on a 2.4 GHz band, download speeds max out at 88.4 Mspb, which is in the lower half of the category. At a 5 GHz band, speeds max out at 233 Mbps, which is in the bottom 10%.

  • Limited Connection Range
    • The router’s connection range tests in at 26.1 meters, which is in the bottom 25% of the category.

  • No Dedicated App
    • Unlike many routers, there’s no app for setup or configuration, which can irritate users who like controlling devices with their phones.

  • Limited USB Ports
    • There’s not a lot of room to connect external devices, as the router only comes with one USB port.

Asus RT-AC66U Specs

# of LAN Ports# of LAN Ports4
# of Phone Ports# of Phone Portsn/a
# of WAN Ports# of WAN Ports1
App CompatibleApp CompatibleYes
Available StorageAvailable Storage128 MB
Band TechnologyBand TechnologyDual
Data Encryption TypeData Encryption TypeWPA-Enterprise, WPA-PSK, WPA2-Enterprise, WPA2-PSK
Energy Star CertifiedEnergy Star CertifiedNo
Frequency BandsFrequency Bands2.4 GHz, 5.0 GHz
Integrated ModemIntegrated ModemNo
LAN PortsLAN Ports4 Gb Ethernet
MU-MIMO SupportMU-MIMO SupportNo
Mesh SystemMesh SystemNo
Number of AntennasNumber of Antennas3
Parental ControlsParental ControlsYes
Processor CoresProcessor CoresSingle
Processor SpeedProcessor Speed0.6Ghz
Quality of Service PrioritizationQuality of Service PrioritizationYes
WiFi RangeWiFi Range
WiFi SpeedWiFi Speed1.75 Gb
Wired SpeedWired Speed1000 Mb
Wireless StandardWireless StandardAC, N

All Specs

Test Results

2.4 GHz Download speed (Mbits/s)88.4143
2.4 GHz Upload speed (Mbits/s)109.705
5 GHz Download speed (Mbits/s)233.2714
5 GHz Upload speed (Mbits/s)322.545
Router Range (ft)85.6667
Latency (ms)0
6 Ghz Download speed (Mbits/s)0
6 Ghz Upload speed (Mbits/s)0

All Tests

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Product Comparison

Asus RT-AC66U Review

ASUS RT-AC66U Review (Old Ver.)

True Score

84
84
72
82
NR

Ranking

#

8

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37

#

5

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37

#

38

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37

#

14

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37

#

/

37

Market Context

The updated dual-band mesh Asus RT-AC66U was released in 2018, providing many features found on today’s best routers. The three antenna router operates on an…

The updated dual-band mesh Asus RT-AC66U was released in 2018, providing many features found on today’s best routers. The three antenna router operates on an 802.11ac and 1GHz dual-core CPU, capable of reaching max speeds of up to 450 Mbps on the 2.4 GHz band and 1,300 Mbps on the 5 GHz band. In terms of memory, it holds 256 MB of RAM. It also has download speeds that measure in at 233 Mbps on 5GHz and 88 Mbps on a 2.4 Mbps.

The router comes with a web interface for users to manage a handful of security features, parental controls, upgrade firmware, and network prioritization. The router also comes with a total of two USB ports and four LAN ports.

While the Asus RT-AC66U is designed for home use, the Asus ROG Rapture GT-AXE16000 is built with gamers in mind. At 233 Mbps on the…

While the Asus RT-AC66U is designed for home use, the Asus ROG Rapture GT-AXE16000 is built with gamers in mind. At 233 Mbps on the 5 GHz band, RT-AC66U B1 has slower max download speeds than the ROG Rapture, which maxes out at 549 Mbps. However, the RT-AC66U has a longer range, which reaches up to 26 meters before dropping out, whereas the ROG Rapture maxes out at 18 meters. For more on this brand, also check out our ASUS ROG GT6 Mesh review.

The ASUS Blue Cave AC2600 has a shorter range than the ASUS RT-AC66U. The AC66U has a connection range of 85 feet, whereas the Blue…

The ASUS Blue Cave AC2600 has a shorter range than the ASUS RT-AC66U. The AC66U has a connection range of 85 feet, whereas the Blue Cave reaches about 125 feet. But in terms of speed, the Blue Cave provides a higher download speed on the 5 GHZ band, which is 242 Mbps, while the AC66U has a peak of 233 Mbps. The AC66U also works better for connecting external devices, given it has 2 USB 3.0 ports compared to the Blue Caves lone USB port. Both are oriented for at-home use, but the RT-AC66U works better for large homes. For further research, we also have an ASUS RT AX86S review.

The Eero 6+ is a great dual-band home WiFi router that has a very high 5 GHz download speed of 444 Mbps, compared to the…

The Eero 6+ is a great dual-band home WiFi router that has a very high 5 GHz download speed of 444 Mbps, compared to the Asus RT-AC66U, which peaks at 233 Mbps. The Eero 6+ also has an easier setup process, given that users can create networks and manage settings through the dedicated smartphone app or web interface; the ASUS RT-AC66U only offers a web interface for setup and settings management. However, the ASUS is much better for supporting external devices, given it has 2 USB ports, whereas the Eero has none. For best speed performance, such as gaming, the Eero is the way to go, but the ASUS is more handy for general home use. If you want to continue learning more about routers, check out our article covering AImesh vs Orbi.

The Asus RT-AC66U improves in the previous RT-AC66U in a few ways. To start, the speed of the newer RT-AC66U B1 is much better, offering…

The Asus RT-AC66U improves in the previous RT-AC66U in a few ways. To start, the speed of the newer RT-AC66U B1 is much better, offering 233 Mbps speeds, whereas the original maxes out at 174 Mbps at a close range. The newer model’s web interface is also more up-to-date, performs at faster speeds, and has enhanced features, providing a quicker setup. Ultimately, the RT-AC66U B1 is a better but pricier option that works better for larger homes.

# of LAN Ports

4

4

4

2

# of Phone Ports

n/a

n/a

n/a

n/a

# of WAN Ports

1

3

1

1

App Compatible

Yes

Yes

Yes

Yes

Available Storage

128 MB

256MB

128 MB

4000MB

Band Technology

Dual

Quad

Dual

Dual

Data Encryption Type

WPA-Enterprise, WPA-PSK, WPA2-Enterprise, WPA2-PSK

WPA3

WPA-Enterprise, WPA-PSK, WPA2-Enterprise, WPA2-PSK

WPA2-PSK, WPA3-Personal

Energy Star Certified

No

n/a

No

No

Dig Deeper

Asus ROG GT-AXE16000 Review →

Asus Blue Cave AC2600 Review →

Eero 6+ Review →

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Score Card

E

Expert Score

83

*.75

We place a 75% weighted value on Expert Test Scores

C

Customer Score

90

*.25

We place a 25% weighted value on Customer Scores

True Score

84

Expert Scores

  • PC Mag
    85.3

    Category Trust Rating

    80
    The Asus RT-AC66U B1 is a budget-friendly dual-band router that is easy to install, feature-packed,… Read More

    By:

    John R. Delaney
  • CNET
    78.11

    Category Trust Rating

    83
    The Asus RT-AC66U is an excellent router and is currently one of the best options… Read More

    By:

    Dong Ngo
  • Trusted Reviews
    67.87

    Category Trust Rating

    80
    While most router setups are slick these days Asus deserves great credit for making the… Read More

    By:

    Gordon Kelly
  • Legit Reviews
    59.37

    Category Trust Rating

    NR
    Even though the ASUS RT-AC66U Dual-Band 802.11ac was not the fastest wireless router we had,… Read More

    By:

    Ken Brown
  • PCWorld
    82.12

    Category Trust Rating

    90
    For early adopters eager to build 802.11ac networks, Asus’s RT-AC66U is the best router for… Read More

    By:

    Michael Brown
  • Small Net Builder
    67.4

    Category Trust Rating

    NR
    Broadcom-based simultaneous dual-band three-stream Draft 2.0 802.11ac router with USB drive and printer sharing and… Read More

    By:

    Tim Higgins

Customer Scores