We and our partners use cookies to give you the best online experience, including to personalise advertising and content. Data about your interaction with this site and the ads shown to you may be shared with companies involved in the delivery and/or personalisation of ads on this site and elsewhere online.

Asus RT-AC51U

PRO rating
How it works?
How it works?
  1. User ratingsUser ratingsratings of product added by Productz users
  2. Expert ratingsExpert ratingsexperts ratings from editorial reviews
  3. Consumer ratingsConsumer ratingsratings from the biggest online stores worldwide
Legend
  1. Excellent
  2. Good
  3. Poor
  4. Average
4.2
based on all reviews
User ratings:
54
4.0 out of 5
54 user ratings
5 stars
35 %
4 stars
35 %
3 stars
25 %
2 stars
3 %
1 stars
0 %
Consumer ratings:
4.2 / 5
Editorial reviews:
4
  1. See more
4 editorial reviews
Everything you need to know about the budget Asus RT-AC51U dual-band router - features, specifications, price info, problems, set up and documentation, quick test and review - Andrew Krustef.Read more
The Asus RT-AX68U is the WiFi 6 replacement for the RT-AC68U, which was of the most popular routers from Asus and it seems that the new device can be placedRead more
Stylish but affordable gaming performance.Read more
Read editorial reviews

Pros

  • affordable
  • stable and relatively easy to use products
  • the compact size makes it a good fit for many homes with multiple people sharing the connection

Cons

  • ASUS RT-AX82U Wi-Fi 6 gaming router
  • only have ultra powerful WiFi6
  • the signal was noticeably weaker

Key specs

  • 4
  • 1
  • yes
  • no
  • yes
  • yes
  • yes

Compare technical data of the product to its category

Asus

Asus RT-AC51U - Pros & Cons

Asus RT-AC51U

Pros

  • affordable
  • stable and relatively easy to use products
  • the compact size makes it a good fit for many homes with multiple people sharing the connection
  • it works excellently with all current WiFi devices
  • Stylish but affordable gaming performance
  • it looks good with some solid Android Central green on the front
  • This router is also fairly compact
  • an easy central control and seamless roaming
  • delivers fast
  • close-range throughput and a stable connection
  • excellent range

Cons

  • ASUS RT-AX82U Wi-Fi 6 gaming router
  • only have ultra powerful WiFi6
  • the signal was noticeably weaker
  • overly-aggressive style/status
  • didn t suffer from lags and disconnection issues
  • bandwidth is quite silly and highly limited range wise
  • lacks
  • lacks some of the software features of the ASUS
  • DFS was not enabled as the router did not automatically enable it
  • unresponsive software when changing settings on the router

Asus RT-AC51U - Technical Overview

PoorAverageGoodExcellent
IconNumber of WAN ports
1
Best:
Cisco MWR 2941-DC
Number of WAN ports: 16
IconTotal wireless data transfer rate
733 Mbps
Best:
TP-Link Talon AD7200
Total wireless data transfer rate: 7133 Mbps
IconNumber of LAN ports
4
Best:
Cisco CISCO7206VXR
Number of LAN ports: 60

Asus - Video Reviews (4)

powered byYouTube

Asus RT-AC51U - Full Specifications

Icon
Connectivity
Connectivity technology
  • Wireless
  • Wired
Number of LAN ports4
Number of WAN ports1
USByes
Total USB ports1
Number of USB 2.0 ports1
Number of USB 3.0/3.1 ports0
Number of USB 3.1 ports0
Icon
Dimensions
Width7.44 in
Height1.42 in
Depth5.08 in
Weight0.6 lb
Number of units1
Rack-mount designno
Icon
Communication
Frequency band
  • 2.4 GHz
  • 5 GHz
Management interfaceWeb/network
6to4yes
Communication protocol
  • IPv6
  • Multicast
  • Quality of Service
  • Wireless Multimedia Extensions
Network / transport Protocol
  • PPTP
  • L2TP
  • IPSec
  • PPPoE
  • LPR/LPD
  • FTP
Data link layer
  • Ethernet
  • Fast Ethernet
  • Gigabit Ethernet
  • IEEE 802.11a
  • IEEE 802.11ac
  • IEEE 802.11b
  • IEEE 802.11g
  • IEEE 802.11n
Wireless standards
  • IEEE 802.11a
  • IEEE 802.11ac
  • IEEE 802.11b
  • IEEE 802.11g
  • IEEE 802.1x
  • IEEE 802.11n
Mobile broadband supportyes
Type of mobile supportUSB modem
Mobile 4G (LTE)yes
Mobile 3Gyes
Mobile 2G (GSM)no
Throughput WAN-LAN100.0 Mbps
VoIP (SIP)no
Wireless networkyes
2.4GHz wireless networkyes
2.4GHz data transfer rate300.0 Mbps
5GHz wireless networkyes
5GHz data transfer rate450.0 Mbps
External antennayes
Detachable antennano
MIMOyes
Number of antennas2
Total wireless data transfer rate733.0 Mbps
Wireless security
  • TKIP
  • WEP
  • WPA-Enterprise
  • WPA-PSK
  • WPA
  • WPA2-Enterprise
  • WPA2-PSK
  • WPA2
  • WPS
Icon
Memory
Included flash memory8.0 MB
Maximum flash memory8.0 MB
Included RAM64.0 MB
Maximum RAM64.0 MB
Icon
Security
DMZyes
VPN protocol
  • IPSec
  • L2TP
  • PPTP
  • OpenVPN
VPN clientyes
Encryption Algorithm
  • MPPE
  • 128-bit WEP
  • 64-bit WEP
  • WPA-PSK
  • WPA2-PSK
  • WPA-Enterprise
  • WPA2-Enterprise
Icon
Design
Colour of product
  • Black
  • Grey
Active cooling (fan)no
Icon
Features
Built-in DSL modemno
File serverVia USB
Built-in printer serveryes
Mobile app for controlling featuresyes
Icon
Compatibility
DynDNSyes
Support for alternative firmwareOpenWrt
Target audienceHome users
Icon
Power
Operational Power Consumption (min-max)< 12
Power over Ethernet (PoE)no

Asus RT-AC51U - Q&A

  • Do you have a question about the product?

Asus RT-AC51U Asus - Editorial Reviews (4)

Other Routers