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ASUS RT AC66U B1 Review | 77 Data compared

Avg. price in UK:~£110Avg. price in US:~$110Wi-Fi version:Wi-Fi 5 (802.11ac)Wi-Fi speed:1750 MbpsLAN port speeds:1 GbpsMesh Wi-Fi:yes

ASUS RT AC66U B1 Review: Compare 77 technical specifications and user reviews to see how this product ranks in the Routers category and whether it is worth buying.

7.7

Overall score

Score
7.7/ 10
✕
What it is
An overall evaluation of the router's quality, based on technical analyses and user reviews.
When it matters
When you need a quick reference to identify the best routers on the market.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 75% of models
Score components

90%

7.6

Technical Score

10%

9.0

User score

â–²Better than 75% of routers
7.6

Technical Score

Technical score
7.6/ 10
✕
What it is
An assessment of the router's technical performance, covering key areas such as Wi-Fi performance, wired connectivity, security, software features, coverage, and design.
When it matters
When you want to compare routers based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 73% of models
Score components

26%

6.4

Wireless

20%

6.3

Ports

18%

9.3

Networking

14%

9.1

Security

12%

6.9

Hardware

10%

8.6

Management

â–²Better than 73% of routers
9.0

User score

User score
9.0/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the router.
When it matters
When you want to know how a router performs in daily use and how reliable it is for speed, coverage, and stability according to user feedback.
Score distribution
â–¼
<55-66-77-88-99-10
★ Better than 92% of models
Score components

70%

8.9

User reviews

30%

9.3

Popularity

User score:
United Kingdom
amazon
4.5
(3288)
amazon
4.2
(966)
amazon
4.2
(42)
United States
Amazon_logo.png
4.5
(3417)
Amazon_logo.png
4.3
(79)

(Reviews last updated: May 2026)

★Better than 92% of routers
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Best prices in UK

Best rankings

Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Verdict

The Asus RT-AC66U B1 is a high-performance AC1750 dual-band Wi-Fi 5 router powered by a 1GHz dual-core processor, 256MB of RAM, and 128MB of flash memory. It delivers concurrent speeds of up to 450Mbps on the 2.4GHz band and 1300Mbps on the 5GHz band, featuring three external antennas with AiRadar beamforming for optimized coverage. Key characteristics include its support for AiMesh technology for whole-home networking, Trend Micro-powered AiProtection for security, and a versatile port array consisting of four Gigabit LAN ports, one Gigabit WAN port, one USB 3.0 port, and one USB 2.0 port. Main pros include its affordable price point, robust parental controls, and speedy throughput performance that remains stable even under heavy load. However, notable cons include its lack of MU-MIMO support for simultaneous data streaming to multiple devices, non-removable antennas, and middling file transfer speeds via its USB ports.

Technical Specifications of router ASUS RT AC66U B1

Technical Score
Technical score
7.6/ 10
✕
What it is
An assessment of the router's technical performance, covering key areas such as Wi-Fi performance, wired connectivity, security, software features, coverage, and design.
When it matters
When you want to compare routers based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 73% of models
Score components:

26%

6.4

Wireless

20%

6.3

Ports

18%

9.3

Networking

14%

9.1

Security

12%

6.9

Hardware

10%

8.6

Management

7.6
ASUS RT AC66U B1 has a technical score of 7.6 points, which is higher than that of 73.3% of products in this category.
User score
User score
9.0/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the router.
When it matters
When you want to know how a router performs in daily use and how reliable it is for speed, coverage, and stability according to user feedback.
Score distribution
â–¼
<55-66-77-88-99-10
★ Better than 92% of models
Score components

70%

8.9

User reviews

30%

9.3

Popularity

User score:
United Kingdom
amazon
4.5
(3288)
amazon
4.2
(966)
amazon
4.2
(42)
United States
Amazon_logo.png
4.5
(3417)
Amazon_logo.png
4.3
(79)

(Reviews last updated: May 2026)

9.0
ASUS RT AC66U B1 has a user score of 8.99 points, which is higher than that of 91.9% of products in this category.
Popularity
Popularity
9.3/ 10
✕
What it is
An indicator based on the number of reviews received by the router.
When it matters
When you prefer to choose a router reviewed and selected by many other buyers.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 86% of models
Popularity:
ASUS RT AC66U B1 has a popularity score of 9.3 points, which is higher than that of 85.8% of products in this category.
9.3
ASUS RT AC66U B1 has a popularity score of 9.3 points, which is higher than that of 85.8% of products in this category.
Ratio quality/price
Value for money
8.4/ 10
✕
What it is
An indicator that combines the router's overall rating with its cost.
When it matters
When you are looking for a router with a good balance between network performance, features, and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 80% of models
Score components:

60%

7.7

Overall score

40%

9.9

Price

8.4
ASUS RT AC66U B1 has a value-for-money score of 8.4 points, which is higher than that of 80.2% of products in this category.
Brand name
Asus
Wi-Fi version
Wi-Fi 5 (802.11ac)
Wi-Fi version
Wi-Fi 5 (802.11ac)
â–² Better than 39% of models
This router uses Wi-Fi Wi-Fi 5 (802.11ac), which is more advanced than 39.5% of routers and equal to 25.3% of routers.
Wi-Fi bands
2.4 GHz + 5 GHz
Wi-Fi bands
2.4 GHz + 5 GHz
â–² Better than 25% of models
This router supports 2.4 GHz + 5 GHz Wi-Fi bands, which are more versatile than 24.8% of routers and equal to 68.1% of routers.
Wi-Fi speed
1,750 Mbps
Wi-Fi speed
1,750 Mbps
â–² Better than 53% of models
Market range: <0 Mbps – >6k Mbps
This router delivers 1,750 Mbps Wi-Fi speed, which is higher than 53.1% of routers and equal to 5% of routers.
Channel widths supported
20 MHz + 40 MHz + 80 MHz
Channel widths supported
20 MHz + 40 MHz + 80 MHz
â–² Better than 41% of models
This router supports 20 MHz + 40 MHz + 80 MHz channel width options, which is more than 40.9% of routers and the same as 31.6% of routers.
Show more
Wi-Fi security protocols
WPA2, WPA, WEP, WPS
Wi-Fi security protocols
WPA2, WPA, WEP, WPS
â–¼ Worse than 67% of models
This router supports WPA2, WPA, WEP, WPS Wi-Fi security protocols, which are less advanced than 67.5% of routers and equal to 11.6% of routers.
DoS protection
yes
DoS protection
yes
â–² Better than 13% of models
This router includes DoS protection. 12.8% of routers include DoS protection.
SPI intrusion protection
yes
SPI intrusion protection
yes
â–² Better than 6% of models
This router includes SPI-based intrusion protection. 6.1% of routers include SPI-based intrusion protection.
MAC address filtering
yes
MAC address filtering
yes
â–² Better than 2% of models
This router supports MAC address filtering. 2.2% of routers include MAC address filtering.
URL filter
yes
URL filter
yes
â–² Better than 3% of models
This router supports URL filtering. 3.4% of routers include URL filtering.
Show more
IPv6 support
yes
IPv6 support
yes
â–² Better than 12% of models
This router supports IPv6. 11.5% of routers are IPv6-ready.
Dynamic routing
no
Dynamic routing
no
â–¼ Worse than 52% of models
This router does not support dynamic routing. 52.5% of routers support dynamic routing.
Inter-VLAN routing
no
Inter-VLAN routing
no
â–¼ Worse than 24% of models
This router does not support inter-VLAN routing. 23.5% of routers support inter-VLAN routing.
VLAN tagging
yes
VLAN tagging
yes
â–² Better than 38% of models
This router supports VLAN tagging. 38.2% of routers include VLAN tagging.
QoS
yes
QoS
yes
â–² Better than 3% of models
This router includes QoS controls. 3.2% of routers include QoS controls.
Show more
N. of LAN ports
4
N. of LAN ports
4
â–² Better than 24% of models
Market range: <0 – >5
This router has 4 LAN ports, which is more than 23.7% of routers and the same as 69.2% of routers.
LAN port speeds
1 Gbps
LAN port speeds
1 Gbps
â–² Better than 27% of models
This router offers 1 Gbps on its LAN ports, which is faster than 27.1% of routers and on par with 59.9% of routers.
N. of WAN ports
1
N. of WAN ports
1
â–¼ Worse than 9% of models
Market range: <0 – >5
This router has 1 WAN ports, which is more than 1% of routers and the same as 90.1% of routers.
N. of USB ports
2
N. of USB ports
2
â–² Better than 79% of models
Market range: <0 – >5
This router has 2 USB ports, which is more than 79.2% of routers and the same as 20.6% of routers.
Power over Ethernet (PoE)
no
Power over Ethernet (PoE)
no
Category Benchmark
This router does not support Power over Ethernet (PoE). 0.5% of routers can be powered over Ethernet.
Show more
Management interface
Web UI, App
Management interface
Web UI, App
â–² Better than 33% of models
This router uses Web UI, App for management, which is more advanced than 33.4% of routers and equal to 57% of routers.
ASUS Router app
Firmware upgrade method
Web UI, App, Automatic
Firmware upgrade method
Web UI, App, Automatic
â–² Better than 79% of models
This router supports Web UI, App, Automatic firmware update methods, which are more convenient than 78.9% of routers and equal to 19.9% of routers.
Traffic monitoring
yes
Traffic monitoring
yes
â–² Better than 18% of models
This router includes traffic monitoring. 18.1% of routers include traffic monitoring.
Guest Wi-Fi network
yes
Guest Wi-Fi network
yes
â–² Better than 9% of models
This router offers a guest Wi‑Fi network. 8.6% of routers offer a guest Wi‑Fi network.
Supports up to 6 SSIDs.
Captive portal
yes
Captive portal
yes
â–² Better than 77% of models
This router offers captive portal features. 76.7% of routers offer captive portal features.
Show more
CPU clock speed
1 GHz
CPU clock speed
1 GHz
â–¼ Worse than 54% of models
This router runs at 1 GHz, which is slower than 53.6% of routers and on par with 1.4% of routers.
RAM capacity
256 MB
RAM capacity
256 MB
â–² Better than 49% of models
Market range: <0 MB – >1k MB
This router has 256 MB of RAM, which is more than 48.7% of routers and the same as 15.4% of routers.
Internal storage
0.125 GB
Internal storage
0.125 GB
â–² Better than 45% of models
Market range: <0 GB – >0.5 GB
This router has 0.125 GB of internal storage, which is more than 45.1% of routers and the same as 22.8% of routers.
Hardware acceleration
yes
Hardware acceleration
yes
â–² Better than 31% of models
This router offers hardware acceleration. 31.4% of routers offer hardware acceleration.
N. of external antennas
3
N. of external antennas
3
â–² Better than 58% of models
Market range: <0 – >10
This router has 3 external antennas, which is more than 58.4% of routers and the same as 13.3% of routers.
Show more

ASUS RT AC66U B1 vs the average router

246810TotalWirelessSecurityNetworkingPortsManagementHardware
  • Supports mesh Wi-Fi
    Mesh Wi-Fi
    yes
    â–² Better than 64% of models
    This router supports mesh Wi-Fi, while the average router does not. 36.4% of routers support mesh Wi-Fi.
  • Supports automatic failover
    Automatic failover
    yes
    â–² Better than 75% of models
    This router offers automatic failover, while the average router does not. 24.9% of routers offer automatic failover.
  • 285,012 more NAT sessions
    NAT concurrent sessions
    300,000
    â–² Better than 80% of models
    Market range: <0 – >300k
    This router has more concurrent NAT sessions than the average router (300,000 vs 14,988). The average router supports 14,988 concurrent NAT sessions.
    300,000 vs 14,988
  • 50% wider wireless coverage
    Wireless coverage
    279 m²
    â–² Better than 79% of models
    Market range: <100 m² – >400 m²
    This router has wider wireless coverage than the average router (279 m² vs 186 m²). The average router offers wireless coverage of 186 m².
    279 m² vs 186 m²
  • 1 more USB ports
    N. of USB ports
    2
    â–² Better than 79% of models
    Market range: <0 – >5
    This router has more USB ports than the average router (2 vs 1). The average router has 1 USB ports.
    2 vs 1
  • Supports captive portal
    Captive portal
    yes
    â–² Better than 77% of models
    This router supports captive portal, while the average router does not. 23.5% of routers support captive portal.
  • Suitable for gaming
    Suitable for gaming
    yes
    â–² Better than 63% of models
    This router is designed for gaming, while the average router is not. 36.9% of routers are designed for gaming.
  • 12.3% higher user score
    User score
    9.0/ 10
    ✕
    What it is
    A rating that combines user reviews and the total number of reviews received by the router.
    When it matters
    When you want to know how a router performs in daily use and how reliable it is for speed, coverage, and stability according to user feedback.
    Score distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    ASUS RT AC66U B1
    the average router
    ★ Better than 96% of models
    ASUS RT AC66U B1 has a higher user score than the average router (8.99 vs 8.000).
    8.99 vs 8
  • 12.3% higher user score
    User score
    9.0/ 10
    ✕
    What it is
    A rating that combines user reviews and the total number of reviews received by the router.
    When it matters
    When you want to know how a router performs in daily use and how reliable it is for speed, coverage, and stability according to user feedback.
    Score distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    ASUS RT AC66U B1
    the average router
    ★ Better than 96% of models
    ASUS RT AC66U B1 has a higher user score than the average router (8.99 vs 8.000).
    8.99 vs 8
  • 42.1% more popular
    ASUS RT AC66U B1 is more popular than the average router (9.29 vs 6.5).
    9.29 vs 6.54
  • 7.2% better value for money
    ASUS RT AC66U B1 has better value for money than the average router (8.38 vs 7.8).
    8.38 vs 7.82
  • Supports mesh Wi-Fi
    Mesh Wi-Fi
    yes
    â–² Better than 64% of models
    This router supports mesh Wi-Fi, while the average router does not. 36.4% of routers support mesh Wi-Fi.
  • 50% wider wireless coverage
    Wireless coverage
    279 m²
    â–² Better than 79% of models
    Market range: <100 m² – >400 m²
    This router has wider wireless coverage than the average router (279 m² vs 186 m²). The average router offers wireless coverage of 186 m².
    279 m² vs 186 m²
  • Supports automatic failover
    Automatic failover
    yes
    â–² Better than 75% of models
    This router offers automatic failover, while the average router does not. 24.9% of routers offer automatic failover.
  • 285,012 more NAT sessions
    NAT concurrent sessions
    300,000
    â–² Better than 80% of models
    Market range: <0 – >300k
    This router has more concurrent NAT sessions than the average router (300,000 vs 14,988). The average router supports 14,988 concurrent NAT sessions.
    300,000 vs 14,988
  • 1 more USB ports
    N. of USB ports
    2
    â–² Better than 79% of models
    Market range: <0 – >5
    This router has more USB ports than the average router (2 vs 1). The average router has 1 USB ports.
    2 vs 1
  • Supports captive portal
    Captive portal
    yes
    â–² Better than 77% of models
    This router supports captive portal, while the average router does not. 23.5% of routers support captive portal.
  • Suitable for gaming
    Suitable for gaming
    yes
    â–² Better than 63% of models
    This router is designed for gaming, while the average router is not. 36.9% of routers are designed for gaming.
  • No dynamic routing
    Dynamic routing
    no
    â–¼ Worse than 52% of models
    This router does not support dynamic routing, while the average router does. 52.3% of routers support dynamic routing.
  • No band steering
    Band steering
    no
    â–¼ Worse than 52% of models
    This router does not support band steering, while the average router does. 51.8% of routers support band steering.
  • 34 fewer connected devices
    Maximum connected devices
    30
    â–¼ Worse than 69% of models
    Market range: <0 – >250
    This router supports fewer connected devices than the average router (30 vs 64). The average router supports 64 connected devices.
    30 vs 64
  • Less capable NAS services
    Built-in NAS services
    SMB, FTP, media server, time machine
    â–² Better than 80% of models
    This router includes SMB, FTP, media server, time machine NAS services, while the average router includes SMB, FTP, time machine, NFS, web access.
    SMB, FTP, media server, time machine vs SMB, FTP, time machine, NFS, web access
  • 50% heavier weight
    Weight
    660 g
    â–¼ Worse than 71% of models
    Market range: <200 g – >1.2k g
    This router is heavier than the average router (660 g vs 440 g). The average router weighs 440 g.
    660 g vs 440 g
  • No band steering
    Band steering
    no
    â–¼ Worse than 52% of models
    This router does not support band steering, while the average router does. 51.8% of routers support band steering.
  • 34 fewer connected devices
    Maximum connected devices
    30
    â–¼ Worse than 69% of models
    Market range: <0 – >250
    This router supports fewer connected devices than the average router (30 vs 64). The average router supports 64 connected devices.
    30 vs 64
  • No dynamic routing
    Dynamic routing
    no
    â–¼ Worse than 52% of models
    This router does not support dynamic routing, while the average router does. 52.3% of routers support dynamic routing.
  • Less capable NAS services
    Built-in NAS services
    SMB, FTP, media server, time machine
    â–² Better than 80% of models
    This router includes SMB, FTP, media server, time machine NAS services, while the average router includes SMB, FTP, time machine, NFS, web access.
    SMB, FTP, media server, time machine vs SMB, FTP, time machine, NFS, web access
  • 50% heavier weight
    Weight
    660 g
    â–¼ Worse than 71% of models
    Market range: <200 g – >1.2k g
    This router is heavier than the average router (660 g vs 440 g). The average router weighs 440 g.
    660 g vs 440 g

Graphic comparison of ASUS RT AC66U B1 and other routers

No results found

Third-party reviews

United Kingdom
amazon
4.5
3288 Reviews
amazon
4.2
966 Reviews
amazon
4.2
42 Reviews
United States
Amazon_logo.png
4.5
3417 Reviews
Amazon_logo.png
4.3
79 Reviews

(Reviews last updated: May 2026)

What customers like about ASUS RT AC66U B1?

  • Affordable price point for a feature-rich dual-band router
  • Strong and speedy throughput performance on the 5GHz band
  • Extremely easy to install and configure via the intuitive AsusWRT web console
  • Includes robust built-in security features like Trend Micro malware protection
  • Compatible with AiMesh, allowing it to be used as a node in a mesh network
  • Solid reliability and stable connections reported by long-term users

What customers dislike about ASUS RT AC66U B1?

  • Middling file transfer performance when using connected USB storage
  • Non-removable antennas limit customization and repair options
  • Instruction manuals and documentation can be outdated or inadequate
  • The front-facing USB 3.0 port design is considered awkward by some users
  • May struggle to deliver full gigabit speeds over Wi-Fi on newer high-speed plans
  • Considered a 'dated' model by some enthusiasts compared to newer Wi-Fi 6 standards

Expert reviews

In-depth analysis and verdict from leading tech publications

U
uk.pcmag.com
21/09/2018
Summary of the review
Asus RT-AC66U B1 Dual-Band Gigabit Wi-Fi Router(www.smallnetbuilder.com) | 20 March 2017 | ASUS RT-AC66U B1 Dual-Band Wireless-AC1750 Gigabit Router R...
B
blacktubi.com
23/09/2019
Summary of the review
ASUS RT-AC66U Router Review: AiMesh System Setup
A
au.pcmag.com
22/09/2018
Summary of the review
Asus RT-AC66U B1 Dual-Band Gigabit Wi-Fi Router Review
P
pcmag.com
21/09/2018
Summary of the review
Asus RT-AC66U B1 Dual-Band Gigabit Wi-Fi Router Review

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

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