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Compare 3 products

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Asus RT-AC51U Router
Asus RT-AC51U
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Asus RT-AC56U Router
Asus RT-AC56U
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Asus RT-N66U Router
Asus RT-N66U
Available colors
Editiorial reviews
3
3 editorial reviews
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
Whether you want a budget router, or a full-on gaming beastRead more
Read editorial reviews
8
8 editorial reviews
Recently, I noticed that my D-Link router is not performing optimally. Coverage seems poorer at…Read more
As the latest additions to ASUS’ quickly expanding 802.11AC family, the RT-AC56 and USB-AC56 are meant to redefine the budget-friendly wireless networking device segment. While one is a router and the other a USB add-on, they’re essentially two pieces of the same puzzle and are looking to offer...Read more
ASUS RT-AC56U (Router): 3.5 out of 5 stars from 2 genuine reviews on Australia's largest opinion site ProductReview.com.au.Read more
Read editorial reviews
18
3.9 out of 5
6 user ratings
5 stars
0 %
4 stars
83 %
3 stars
16 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
User rating
54
4.0 out of 5
54 user ratings
5 stars
35 %
4 stars
35 %
3 stars
25 %
2 stars
3 %
1 stars
0 %
39
4.0 out of 5
39 user ratings
5 stars
38 %
4 stars
41 %
3 stars
5 %
2 stars
10 %
1 stars
5 %
42
3.8 out of 5
42 user ratings
5 stars
16 %
4 stars
52 %
3 stars
28 %
2 stars
2 %
1 stars
0 %

Connectivity

Connectivity technology
  • Wireless
  • Wired
  • Wireless
  • Wired
  • Wireless
  • Wired
Number of LAN ports444
Number of WAN ports111
USByesyesyes
Total USB ports122
Number of USB 2.0 ports112
Number of USB 3.0/3.1 ports010
Number of USB 3.1 ports0
N/A
0
Communication mode
N/A
Full-Duplex
N/A

Design

Colour of product
  • Black
  • Grey
  • Black
  • Grey
  • Black
  • Grey
  • White
Active cooling (fan)nonono

Dimensions

Width7.44 in8.07 in8.15 in
Height1.42 in2.6 in1.4 in
Depth5.08 in5.79 in5.86 in
Weight0.6 lb0.88 lb0.99 lb
Number of units111
Rack-mount designnonono

Features

Built-in DSL modemnonono
File serverVia USBVia USBVia USB
Built-in printer serveryesyesyes
Mobile app for controlling featuresyesyesyes
Designed for wall mounting
N/A
N/A
yes

Communication

Frequency band
  • 2.4 GHz
  • 5 GHz
  • 2.4 GHz
  • 5 GHz
  • 2.4 GHz
  • 5 GHz
Management interfaceWeb/networkWeb/networkWeb/network
6to4yesnoyes
Communication protocol
  • IPv6
  • Multicast
  • Quality of Service
  • Wireless Multimedia Extensions
  • IPv6
  • Multicast
  • Quality of Service
  • Wireless Multimedia Extensions
  • IPv6
  • Multicast
  • Quality of Service
  • Wireless Multimedia Extensions
Network / transport Protocol
  • PPTP
  • L2TP
  • IPSec
  • PPPoE
  • LPR/LPD
  • FTP
  • PPTP
  • L2TP
  • NTP
  • IPSec
  • PPPoE
  • FTP
  • DHCP
  • DDNS
  • PPTP
  • L2TP
  • NTP
  • IPSec
  • PPPoE
  • LPR/LPD
  • FTP
  • DHCP
  • DDNS
Data link layer
  • Ethernet
  • Fast Ethernet
  • Gigabit Ethernet
  • IEEE 802.11a
  • IEEE 802.11ac
  • IEEE 802.11b
  • IEEE 802.11g
  • IEEE 802.11n
  • Ethernet
  • Fast Ethernet
  • Gigabit Ethernet
  • IEEE 802.11a
  • IEEE 802.11ac
  • IEEE 802.11b
  • IEEE 802.11g
  • IEEE 802.11n
  • Ethernet
  • Fast Ethernet
  • Gigabit Ethernet
  • IEEE 802.11a
  • 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
  • IEEE 802.11a
  • IEEE 802.11ac
  • IEEE 802.11b
  • IEEE 802.11d
  • IEEE 802.11e
  • IEEE 802.11g
  • IEEE 802.11i
  • IEEE 802.1x
  • IEEE 802.3
  • IEEE 802.3ab
  • IEEE 802.3u
  • IEEE 802.11n
  • IEEE 802.11a
  • IEEE 802.11b
  • IEEE 802.11g
  • IEEE 802.3
  • IEEE 802.3ab
  • IEEE 802.3u
  • IEEE 802.3x
  • IEEE 802.11n
Mobile broadband supportyesyesyes
Type of mobile supportUSB modemUSB modemUSB modem
Mobile 4G (LTE)yesyesyes
Mobile 3Gyesyesyes
Mobile 2G (GSM)no
N/A
yes
Throughput WAN-LAN100.0 Mbps778.2 Mbps731.0 Mbps
VoIP (SIP)nonono
Wireless networkyesyesyes
2.4GHz wireless networkyesyesyes
2.4GHz data transfer rate300.0 Mbps300.0 Mbps450.0 Mbps
5GHz wireless networkyesyesyes
5GHz data transfer rate450.0 Mbps867.0 Mbps450.0 Mbps
External antennayesnoyes
Detachable antennano
N/A
yes
MIMOyesyesyes
Number of antennas2
N/A
3
Total wireless data transfer rate733.0 Mbps1167.0 Mbps900.0 Mbps
Wireless security
  • TKIP
  • WEP
  • WPA-Enterprise
  • WPA-PSK
  • WPA
  • WPA2-Enterprise
  • WPA2-PSK
  • WPA2
  • WPS
  • WEP
  • WPA-PSK
  • WPA
  • WPA2-PSK
  • WPA2
  • WPS
  • TKIP
  • WEP
  • WPA-PSK
  • WPA
  • WPA2-PSK
  • WPA2
  • WPS
Number of simultaneous connections
N/A
3062134925
Jumbo frames support
N/A
yesyes
Mobile HSUPA
N/A
N/A
yes
Mobile HSDPA (turbo-3G)
N/A
N/A
yes
Beamforming
N/A
N/A
yes
MU-MIMO
N/A
N/A
no

Compatibility

DynDNSyesyesyes
Support for alternative firmwareOpenWrtDD-Wrt
  • DD-Wrt
  • OpenWrt
Target audienceHome usersHome users
  • Smaller offices
  • Business
  • Home users
Routing protocol
N/A
IGMPStatic IP routing

Memory

Included flash memory8.0 MB128.0 MB32.0 MB
Maximum flash memory8.0 MB128.0 MB32.0 MB
Included RAM64.0 MB256.0 MB256.0 MB
Maximum RAM64.0 MB256.0 MB256.0 MB

Power

Operational Power Consumption (min-max)< 12
N/A
< 30
Power over Ethernet (PoE)nonono

Security

DMZyesyesyes
VPN protocol
  • IPSec
  • L2TP
  • PPTP
  • OpenVPN
  • IPSec
  • L2TP
  • PPTP
  • IPSec
  • L2TP
  • PPTP
VPN clientyesyesyes
Encryption Algorithm
  • MPPE
  • 128-bit WEP
  • 64-bit WEP
  • WPA-PSK
  • WPA2-PSK
  • WPA-Enterprise
  • WPA2-Enterprise
  • MPPE
  • 128-bit WEP
  • 64-bit WEP
  • WPA-PSK
  • WPA2-PSK
  • WPA-Enterprise
  • WPA2-Enterprise
  • MPPE
  • 128-bit WEP
  • 64-bit WEP
  • WPA-PSK
  • WPA2-PSK
  • WPA-Enterprise
  • WPA2-Enterprise
Number of DMZ ports
N/A
N/A
1

Often compared with Asus RT-AC56U

Often compared with Asus RT-N66U