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Scored using Wi-Fi extenders Methodology v1.0
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Products in this category are evaluated mathematically under Frontumo Wi-Fi extenders Methodology v1.0 using verified laboratory benchmarks, technical specifications, and authentic consumer ratings with 0% commercial bias.
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ASUS RP-AC51 Review | 63 Data compared

Avg. price:~£25Wi-Fi version:Wi-Fi 5 (802.11ac)Wi-Fi speed:733 MbpsCoverage area:186 m²

ASUS RP-AC51 Review: Compare 63 technical specifications and user reviews to see how this product ranks in the Wi-Fi extenders category and whether it is worth buying.

5.5

Overall score

Score
5.5/ 10
✕
What it is
An overall evaluation of the Wi-Fi extender's quality, based on technical analyses and user reviews.
When it matters
When you need a quick reference to spot the best Wi‑Fi extenders overall.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 77% of models
Score components

80%

5.0

Technical score

20%

7.4

User score

â–¼Worse than 77% of wi-fi-extenders
5.0

Technical score

Technical score
5.0/ 10
✕
What it is
An assessment of technical performance for products in the Wi-Fi extenders category across these key areas: Wi-Fi Performance, Network & Security, Ports, Setup & Management, Hardware & Deployment.
When it matters
When you want to compare Wi‑Fi extenders based on speed, coverage, ports, and wireless features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 78% of models
Score components

40%

4.0

Wi-Fi Performance

30%

5.2

Network & Security

12%

8.7

Setup & Management

10%

5.2

Hardware & Deployment

8%

3.3

Ports

â–¼Worse than 78% of wi-fi-extenders
7.4

User score

User score
7.4/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the Wi-Fi extender.
When it matters
When you want to know how a Wi‑Fi extender performs in daily use and how reliably it maintains a stable connection over time according to user feedback.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 83% of models
Score components

70%

7.8

User ratings

30%

6.4

Number of reviews

Based on 496 buyer reviews from online shops.
Read buyer reviews on Amazon →
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
â–¼Worse than 83% of wi-fi-extenders
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Best prices

    N/A~ £25

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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Technical Specifications of Wi-Fi extender ASUS RP-AC51

Technical score
Technical score
5.0/ 10
✕
What it is
An assessment of technical performance for products in the Wi-Fi extenders category across these key areas: Wi-Fi Performance, Network & Security, Ports, Setup & Management, Hardware & Deployment.
When it matters
When you want to compare Wi‑Fi extenders based on speed, coverage, ports, and wireless features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 78% of models
Score components:

40%

4.0

Wi-Fi Performance

30%

5.2

Network & Security

12%

8.7

Setup & Management

10%

5.2

Hardware & Deployment

8%

3.3

Ports

5.0
User score
User score
7.4/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the Wi-Fi extender.
When it matters
When you want to know how a Wi‑Fi extender performs in daily use and how reliably it maintains a stable connection over time according to user feedback.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 83% of models
Score components

70%

7.8

User ratings

30%

6.4

Number of reviews

Based on 496 buyer reviews from online shops.
Read buyer reviews on Amazon →
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
7.4
Popularity
Popularity
6.4/ 10
✕
What it is
An indicator based on the number of reviews received by the Wi-Fi extender.
When it matters
When you prefer to buy a Wi‑Fi extender that has already been chosen and reviewed by many other users.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 54% of models
Popularity:
ASUS RP-AC51 has a popularity score of 6.4 points, which is lower than 52.9% of Wi-Fi extenders.
6.4
Value for money
Value for money
6.8/ 10
✕
What it is
An indicator that combines the Wi-Fi extender's overall rating with its cost.
When it matters
When you are looking for a Wi‑Fi extender with a good balance between performance and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 77% of models
Score components:

60%

5.5

Overall score

40%

10

Price

6.8
Wi-Fi version
Wi-Fi 5 (802.11ac)
Wi-Fi version
Wi-Fi 5 (802.11ac)
â–¼ Worse than 46% of models
This wi-fi extender supports Wi-Fi 5 (802.11ac), more advanced than 9.8% of Wi-Fi extenders and equal to 44.1% of Wi-Fi extenders.
Wi-Fi bands
Dual-band
Wi-Fi bands
Dual-band
â–¼ Worse than 15% of models
This wi-fi extender supports Dual-band, more versatile than 10.8% of Wi-Fi extenders and equal to 74.5% of Wi-Fi extenders.
6 GHz band support
no
6 GHz band support
no
â–¼ Worse than 6% of models
This wi-fi extender does not support the 6 GHz band. 5.9% of Wi-Fi extenders support the 6 GHz band.
Wi-Fi speed
733 Mbps
Wi-Fi speed
733 Mbps
â–¼ Worse than 88% of models
Market range: <733 Mbps – >5.4k Mbps
This wi-fi extender reaches 733 Mbps Wi-Fi speed, slower than 88.2% of Wi-Fi extenders and equal to 2% of Wi-Fi extenders.
Max speed 2.4 GHz
300 Mbps
Max speed 2.4 GHz
300 Mbps
â–¼ Worse than 62% of models
Market range: <300 Mbps – >600 Mbps
This wi-fi extender reaches 300 Mbps on 2.4 GHz, slower than 61.8% of Wi-Fi extenders and equal to 36.3% of Wi-Fi extenders.
Show more
Ethernet backhaul
yes
Ethernet backhaul
yes
â–² Better than 49% of models
This wi-fi extender supports Ethernet backhaul. 49.5% of Wi-Fi extenders support Ethernet backhaul.
Mesh compatibility
N/A
Mesh standard
proprietary mesh
Roaming feature
yes
Roaming feature
yes
â–² Better than 18% of models
This wi-fi extender supports roaming. 17.7% of Wi-Fi extenders support roaming.
Roaming Assist.
802.11k support
no
802.11k support
no
â–¼ Worse than 77% of models
This wi-fi extender does not support 802.11k. 77% of Wi-Fi extenders support 802.11k.
Show more
N. of LAN ports
1
N. of LAN ports
1
â–¼ Worse than 16% of models
Market range: <1 – >2
This wi-fi extender has 1 LAN port/s, more than 9.8% of Wi-Fi extenders and equal to 74.5% of Wi-Fi extenders.
Ethernet port speed
0.1 Gbps
Ethernet port speed
0.1 Gbps
â–¼ Worse than 75% of models
Market range: <0.1 Gbps – >2.5 Gbps
This wi-fi extender offers 0.1 Gbps Ethernet speed, slower than 75.5% of Wi-Fi extenders and equal to 21.6% of Wi-Fi extenders.
N. of USB ports
0
N. of USB ports
0
â–¼ Worse than 3% of models
Market range: <0 – >0
This wi-fi extender has 0 USB port/s, fewer than 2.9% of Wi-Fi extenders and equal to 97.1% of Wi-Fi extenders.
PoE standard
N/A
Dedicated smartphone app
yes
Dedicated smartphone app
yes
â–² Better than 16% of models
This wi-fi extender comes with a dedicated smartphone app. 15.7% of Wi-Fi extenders come with a dedicated smartphone app.
ASUS Extender app.
Web UI management
yes
Web UI management
yes
â–² Better than 2% of models
This wi-fi extender has a web management interface. 2% of Wi-Fi extenders have a web management interface.
Automatic firmware updates
no
Automatic firmware updates
no
â–¼ Worse than 46% of models
This wi-fi extender does not have automatic firmware updates. 46.1% of Wi-Fi extenders have automatic firmware updates.
LED control
yes
LED control
yes
â–² Better than 15% of models
This wi-fi extender has LED control. 14.7% of Wi-Fi extenders have LED control.
Buttons present
wps, reset, power
Show more
Mounting type
wall-plug
Portable design
yes
Portable design
yes
â–² Better than 34% of models
This wi-fi extender has a portable design. 34.3% of Wi-Fi extenders have a portable design.
Height
81 mm
Height
81 mm
â–² Better than 63% of models
Market range: <38 mm – >190 mm
This wi-fi extender is 81 mm tall, shorter than 62.8% of Wi-Fi extenders and equal to 1% of Wi-Fi extenders.
Width
55 mm
Width
55 mm
★ Better than 97% of models
Market range: <61.5 mm – >170 mm
This wi-fi extender is 55 mm wide, narrower than 97.1% of Wi-Fi extenders and equal to 2% of Wi-Fi extenders.
Thickness
34 mm
Thickness
34 mm
â–² Better than 88% of models
Market range: <34 mm – >76.2 mm
This wi-fi extender is 34 mm thick, thinner than 88.2% of Wi-Fi extenders and equal to 4.9% of Wi-Fi extenders.
Show more

ASUS RP-AC51 vs the average Wi-Fi extender

246810TotalWi-Fi PerformanceNetwork & SecurityPortsSetup & ManagementHardware & Deployment
  • 4.5 W lower power consumption
    Operating power consumption
    5 W
    â–² Better than 75% of models
    Market range: <3.57 W – >15.2 W
    This wi-fi extender uses less power than the average Wi-Fi extender (5 W vs 9.5 W). The average Wi-Fi extender uses 9.5 W of power.
    5 W vs 9.5 W
  • 45.7% lighter
    Weight
    152 g
    â–² Better than 83% of models
    Market range: <130 g – >600 g
    This wi-fi extender is lighter than the average Wi-Fi extender (152 g vs 280 g). The average Wi-Fi extender weighs 280 g.
    152 g vs 280 g
  • 12 mm thinner
    Thickness
    34 mm
    â–² Better than 88% of models
    Market range: <34 mm – >76.2 mm
    This wi-fi extender is thinner than the average Wi-Fi extender (34 mm vs 46 mm). The average Wi-Fi extender has a thickness of 46 mm.
    34 mm vs 46 mm
  • 24% larger coverage area
    Coverage area
    186 m²
    â–² Better than 56% of models
    Market range: <93 m² – >260 m²
    This wi-fi extender covers a larger area than the average Wi-Fi extender (186 m² vs 150 m²). The average Wi-Fi extender covers 150 m².
    186 m² vs 150 m²
  • 26.4 mm narrower width
    Width
    55 mm
    ★ Better than 97% of models
    Market range: <61.5 mm – >170 mm
    This wi-fi extender is narrower than the average Wi-Fi extender (55 mm vs 81.4 mm). The average Wi-Fi extender has a width of 81.4 mm.
    55 mm vs 81.4 mm
  • 2.8x cheaper
    ASUS RP-AC51 is cheaper than the average Wi-Fi extender (£25 vs £70).
    £25 vs £70
  • 2.8x cheaper
    ASUS RP-AC51 is cheaper than the average Wi-Fi extender (£25 vs £70).
    £25 vs £70
  • 24% larger coverage area
    Coverage area
    186 m²
    â–² Better than 56% of models
    Market range: <93 m² – >260 m²
    This wi-fi extender covers a larger area than the average Wi-Fi extender (186 m² vs 150 m²). The average Wi-Fi extender covers 150 m².
    186 m² vs 150 m²
  • 4.5 W lower power consumption
    Operating power consumption
    5 W
    â–² Better than 75% of models
    Market range: <3.57 W – >15.2 W
    This wi-fi extender uses less power than the average Wi-Fi extender (5 W vs 9.5 W). The average Wi-Fi extender uses 9.5 W of power.
    5 W vs 9.5 W
  • 45.7% lighter
    Weight
    152 g
    â–² Better than 83% of models
    Market range: <130 g – >600 g
    This wi-fi extender is lighter than the average Wi-Fi extender (152 g vs 280 g). The average Wi-Fi extender weighs 280 g.
    152 g vs 280 g
  • 12 mm thinner
    Thickness
    34 mm
    â–² Better than 88% of models
    Market range: <34 mm – >76.2 mm
    This wi-fi extender is thinner than the average Wi-Fi extender (34 mm vs 46 mm). The average Wi-Fi extender has a thickness of 46 mm.
    34 mm vs 46 mm
  • 26.4 mm narrower width
    Width
    55 mm
    ★ Better than 97% of models
    Market range: <61.5 mm – >170 mm
    This wi-fi extender is narrower than the average Wi-Fi extender (55 mm vs 81.4 mm). The average Wi-Fi extender has a width of 81.4 mm.
    55 mm vs 81.4 mm
  • No Mesh Wi-Fi support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support mesh Wi-Fi, while the average Wi-Fi extender does. 65% of Wi-Fi extenders support mesh Wi-Fi.
  • No WPA3 support
    WPA3 support
    no
    â–¼ Worse than 57% of models
    This wi-fi extender does not support WPA3, while the average Wi-Fi extender does. 56.7% of Wi-Fi extenders support WPA3.
  • No QoS support
    QoS support
    no
    â–¼ Worse than 53% of models
    This wi-fi extender does not support QoS, while the average Wi-Fi extender does. 52.4% of Wi-Fi extenders support QoS.
  • 58.7% slower Wi-Fi speed
    Wi-Fi speed
    733 Mbps
    â–¼ Worse than 88% of models
    Market range: <733 Mbps – >5.4k Mbps
    This wi-fi extender reaches slower Wi-Fi speed than the average Wi-Fi extender (733 Mbps vs 1775 Mbps). The average Wi-Fi extender reaches 1775 Mbps Wi-Fi speed.
    733 Mbps vs 1,775 Mbps
  • No MU-MIMO support
    MU-MIMO
    no
    â–¼ Worse than 73% of models
    This wi-fi extender does not support MU-MIMO, while the average Wi-Fi extender does. 71.8% of Wi-Fi extenders support MU-MIMO.
  • No 802.11r support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support 802.11r, while the average Wi-Fi extender does. 57.3% of Wi-Fi extenders support 802.11r.
  • 90% slower Ethernet speed
    Ethernet port speed
    0.1 Gbps
    â–¼ Worse than 75% of models
    Market range: <0.1 Gbps – >2.5 Gbps
    This wi-fi extender offers slower Ethernet speed than the average Wi-Fi extender (0.1 Gbps vs 1 Gbps). The average Wi-Fi extender offers 1 Gbps Ethernet speed.
    0.1 Gbps vs 1 Gbps
  • No 802.11v support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support 802.11v, while the average Wi-Fi extender does. 66.3% of Wi-Fi extenders support 802.11v.
  • 8.6% lower user score
    User score
    7.4/ 10
    ✕
    What it is
    A rating that combines user reviews and the total number of reviews received by the Wi-Fi extender.
    When it matters
    When you want to know how a Wi‑Fi extender performs in daily use and how reliably it maintains a stable connection over time according to user feedback.
    Score distribution
    ▼▼
    <55-66-77-88-99-10
    ASUS RP-AC51
    the average Wi-Fi extender
    ASUS RP-AC51 has a lower user score than the average Wi-Fi extender (7.37 vs 8.000).
    7.37 vs 8
  • 18.1% worse value for money
    ASUS RP-AC51 has a lower value-for-money score than the average Wi-Fi extender (6.82 vs 8.1).
    6.82 vs 8.05
  • No Mesh Wi-Fi support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support mesh Wi-Fi, while the average Wi-Fi extender does. 65% of Wi-Fi extenders support mesh Wi-Fi.
  • 58.7% slower Wi-Fi speed
    Wi-Fi speed
    733 Mbps
    â–¼ Worse than 88% of models
    Market range: <733 Mbps – >5.4k Mbps
    This wi-fi extender reaches slower Wi-Fi speed than the average Wi-Fi extender (733 Mbps vs 1775 Mbps). The average Wi-Fi extender reaches 1775 Mbps Wi-Fi speed.
    733 Mbps vs 1,775 Mbps
  • No MU-MIMO support
    MU-MIMO
    no
    â–¼ Worse than 73% of models
    This wi-fi extender does not support MU-MIMO, while the average Wi-Fi extender does. 71.8% of Wi-Fi extenders support MU-MIMO.
  • No beamforming support
    Beamforming
    no
    â–¼ Worse than 83% of models
    This wi-fi extender does not support beamforming, while the average Wi-Fi extender does. 82.5% of Wi-Fi extenders support beamforming.
    AC750 1x1 5GHz physically lacks multi-antenna beamforming
  • 150 Mbps slower 2.4 GHz speed
    Max speed 2.4 GHz
    300 Mbps
    â–¼ Worse than 62% of models
    Market range: <300 Mbps – >600 Mbps
    This wi-fi extender reaches a slower 2.4 GHz speed than the average Wi-Fi extender (300 Mbps vs 450 Mbps). The average Wi-Fi extender reaches 450 Mbps on 2.4 GHz.
    300 Mbps vs 450 Mbps
  • No band steering
    Band steering
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not have band steering, while the average Wi-Fi extender does. 65% of Wi-Fi extenders have band steering.
  • 0.63 dBi lower antenna gain
    Antenna gain
    3.37 dBi
    â–¼ Worse than 66% of models
    Market range: <2 dBi – >5.97 dBi
    This wi-fi extender has lower antenna gain than the average Wi-Fi extender (3.4 dBi vs 4 dBi). The average Wi-Fi extender has 4 dBi antenna gain.
    3.37 on 2.4 GHz; 3.37 on 5 GHz.
    3.37 dBi vs 4 dBi
  • No WPA3 support
    WPA3 support
    no
    â–¼ Worse than 57% of models
    This wi-fi extender does not support WPA3, while the average Wi-Fi extender does. 56.7% of Wi-Fi extenders support WPA3.
  • No QoS support
    QoS support
    no
    â–¼ Worse than 53% of models
    This wi-fi extender does not support QoS, while the average Wi-Fi extender does. 52.4% of Wi-Fi extenders support QoS.
  • No 802.11r support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support 802.11r, while the average Wi-Fi extender does. 57.3% of Wi-Fi extenders support 802.11r.
  • No 802.11v support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support 802.11v, while the average Wi-Fi extender does. 66.3% of Wi-Fi extenders support 802.11v.
  • No 802.11k support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support 802.11k, while the average Wi-Fi extender does. 76.2% of Wi-Fi extenders support 802.11k.
  • 90% slower Ethernet speed
    Ethernet port speed
    0.1 Gbps
    â–¼ Worse than 75% of models
    Market range: <0.1 Gbps – >2.5 Gbps
    This wi-fi extender offers slower Ethernet speed than the average Wi-Fi extender (0.1 Gbps vs 1 Gbps). The average Wi-Fi extender offers 1 Gbps Ethernet speed.
    0.1 Gbps vs 1 Gbps
  • 75% less RAM
    RAM capacity
    64 MB
    â–¼ Worse than 65% of models
    Market range: <64 MB – >512 MB
    This wi-fi extender has less RAM than the average Wi-Fi extender (64 MB vs 256 MB). The average Wi-Fi extender has 256 MB of RAM.
    64 MB vs 256 MB

Video reviews

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

Expert reviews

In-depth analysis and verdict from leading tech publications

T
techtest.org
03/08/2017
Summary of the review
The ASUS RP-AC51 Repeater Review: Cheap and Good?
(Translated)Show original
R
redeszone.net
23/10/2017
Summary of the review
We analyze the ASUS RP-AC51 Wi-Fi repeater, a small AC750 Wi-Fi range extender
(Translated)Show original
R
redeszone.net
23/10/2017
Summary of the review
ASUS RP-AC51 AC750: In-depth review and performance benchmarks
(Translated)Show original

Third-party reviews

Based on 496 buyer reviews from online shops.
Reviews last updated: June 2026 · How we calculate this
Read buyer reviews on Amazon →

What we like about ASUS RP-AC51

  • Versatile 3-in-1 functionality (Repeater, Access Point, and Media Bridge modes)
  • Compact wall-plug design that doesn't occupy much space
  • Helpful LED signal indicators to find the optimal placement location
  • Easy one-touch setup using the physical WPS button
  • User-friendly management via the ASUS Extender mobile app
  • Strong performance when used as a wired Access Point
  • Familiar ASUSWRT interface for existing ASUS router users

What we don't like about ASUS RP-AC51

  • Limited to 'Fast Ethernet' (100Mbps) on the LAN port, which can bottleneck high-speed internet
  • Relatively slow maximum speeds (AC750) compared to modern Wi-Fi 6 standards
  • Users report occasional connection drops or reliability issues in 'Repeater' mode
  • The 5GHz range is significantly shorter than the 2.4GHz band
  • Firmware can be sluggish and may lack some advanced features found in full routers
  • Does not support MU-MIMO for handling multiple high-bandwidth devices simultaneously

Verdict

The Asus RP-AC51 is a compact AC750 dual-band Wi-Fi range extender that delivers combined speeds of up to 750Mbps, with 433Mbps on the 5GHz band and 300Mbps on the 2.4GHz band. Key characteristics include two external antennas for enhanced coverage, a 3-in-1 mode selector (Repeater, Access Point, and Media Bridge), and a physical WPS button for one-click setup. Main pros feature its user-friendly ASUS Extender App for mobile management, handy positioning LEDs to find the optimal signal spot, and a built-in Fast Ethernet port for wired connectivity. However, notable cons include its limitation to older Wi-Fi 5 (802.11ac) standards, the lack of MU-MIMO support for handling multiple high-bandwidth devices simultaneously, and a maximum wired throughput capped at 100Mbps due to the Fast Ethernet port.

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