- RT-AC51 (802.11AC) Dual Band Router
- Offers combined concurrent speeds of up to 733 Mbps throughput
- Advanced parental control supported
- Offers improved coverage and multi-device performance with four external antennas
- Super-fast AC Wi-Fi with 256 QAM Wi-Fi acceleration
- Network control via ASUS Router app and
- Boasts an easy 3-step setup with ASUSWRT UI
Asus RT-AC51 802.11AC Dual Band Router Description
A solid choice for basic home networking and intensive applications alike is the Asus RT-AC51 802.11AC Dual Band Router. This dual-band Wi-Fi router networking task provides AC750 Wi-Fi ratings delivering combined speeds of up to 733 Mbps - 300 Mbps on 2.4GHz and 433 Mbps on 5GHz. Featuring four external antennas, with two dedicated to each of the 2.4GHz and 5GHz bands, the RT-AC51 router optimises its wireless performance by reducing signal loss and dead zones within the coverage area, working together to expand the router's coverage area, and providing multiple paths for data transmission. A USB Port is featured on this router to offer versatility for file sharing, printer sharing, or 3G/4G dongle support. Its Parental Control functionality helps protect children from inappropriate content. Enjoy the ASUSWRT dashboard UI and the supported ASUS Router App for easy setup and network management.
Dual Band
Dual-band Wi-Fi is a feature of the ASUS RT-AC51 802.11AC Router. Its 2.4 GHz band offers wider coverage and is compatible with older devices, while the 5 GHz band is best used for high-bandwidth activities like 4K streaming and online gaming. The 5 GHz Wi-Fi standard offers faster speed, handling more devices connected to the network simultaneously without experiencing slowdowns, managing data transmission more efficiently, minimising congestion and ensuring a smoother overall network experience, unlike the 2.4 GHz band. Hence the former is ideal for demanding tasks and the latter is suitable for general internet browsing, email, and social media.


Four External Antennas
Improving coverage and delivering multi-device performance, the ASUS RT-AC51 802.11AC Dual Band Router features four external antennas — two each for the 2.4 GHz and 5 GHz bands. These antennas reduce signal loss and dead zones within the home, work together to expand the router's coverage area, and provide multiple paths for data transmission. Dedicating two antennas to each frequency band allows for better optimization of signal strength and coverage for both the 2.4GHz and 5GHz networks.
ASUS Router App
The ASUS Router app is a convenient tool that puts control of your RT-AC51 802.11AC Dual Band Router's network at your fingertips. It offers remote network management allowing you to monitor and adjust router settings from your smartphone or tablet, regardless of your location, create and manage guest Wi-Fi networks with ease, quickly troubleshoot issues and optimise network performance, implement robust security measures to protect your network, update to the latest firmware versions, and lots more.

ASUSWRT UI
The ASUS RT-AC51 802.11AC Dual Band Router supports a comprehensive web-based platform - ASUSWRT. It features a graphical userfriendly interface - that provides configuring advanced features and monitors network performance with ease. With an easy 3-step setup, this interface makes your stay up easy and simple.
What's in the Box?
- Asus RT-AC51 802.11AC Dual Band Router
- RJ-45 Cable
- Power Adapter
- Quick Start Guide
Asus RT-AC51 802.11AC Dual Band Router Specifications
Technical
Model: RT-AC51
Network Standard
- IEEE 802.11a
- IEEE 802.11b
- IEEE 802.11g
- WiFi 4 (802.11n)
- WiFi 5 (802.11ac)
- IPv4
- IPv6
- IEEE 802.11e
- IEEE 802.11i
WiFi Data Rate
- 802.11a : up to 54 Mbps
- 802.11b : up to 11 Mbps
- 802.11g : up to 54 Mbps
- WiFi 4 (802.11n) : up to 300 Mbps
- WiFi 5 (802.11ac) : up to 433 Mbps
Antenna
- External antenna x 4
Transmit / Receive
- MIMO technology
- 2.4GHz 2x2
- 5GHz 2x2
Memory
- 16 MB Flash
- 64 MB RAM
Operating Frequency:
- 2.4GHz
- 5GHz
Operating Mode
- Accesspoint, Router
I/O Ports
- RJ45 for 10/100Mbps BaseT for WAN x 1
- RJ45 for 10/100Mbps BaseT for LAN x 4
Buttons: WPS Button, Reset Button, Power Button
Power Supply
- AC Input : 110V~240V(50~60Hz)
- DC Output : 12 V with max. 0.5 A current
Product Weight (g): 271 g
Product Dimensions: 177 x126 x 34 ~ mm (WxDxH)
Parental Control
- "Allow you to block access to unwanted websites and apps."
- Customized Internet Schedule
Guest Network
- "The Guest Network provides Internet connection for guests but restricts access to your local network."
- • Maximum Guest Network Rule : 2.4GHz x3, 5GHz x3
- Guest Network Connection Time Limit
- Guest Network Encryption : Open system, WPA/WPA2-Personal
Security
- Open system, WPA/WPA2-Personal, WPA/WPA2-Enterprise
- WPS
- SSH
- Firewall
- • Maximum Firewall Keyword Filter : 64
- • Maximum Firewall Network Service Filter : 32
- • Maximum Firewall URL Filter : 64
Traffic Control
- • Bandwidth Limiter
- -- Maximum Bandwidth Limiter Rule : 32
- Traditional QoS
- -- Maximum Traditional QoS Rule : 32
- Traffic Monitor
- • Real-time Traffic Monitor
- • Wired Traffic Monitor
- • Wireless Traffic Monitor
- • Traffic Analysis Period : Daily, Weekly, Monthly
WAN
- Internet connection Type : PPPoE, PPTP, L2TP, Automatic IP, Static IP
- Port forwarding
- • Maximum Port Forwarding Rule : 64
- Port triggering
- • Maximum Port Triggering Rule : 32
- DMZ
- DDNS
- NAT Passthrough : PPTP, L2TP, IPSec, RTSP, H.323, SIP Passthrough,PPPoE relay
LAN
- DHCP Server
- IGMP Snooping
- IPTV
- Manually Assign IP Address
- • Maximum Manually Assign IP Address Rule : 64
- Wake on LAN (WOL)
Wireless
- UTF-8 SSID
- WiFi MAC Address Filter
- • Maximum MAC Filters : 64
- Wireless Scheduler
- Airtime Fairness
- RADIUS Client
- Explicit Beamforming
USB application
- File System : FAT16, FAT32, NT3G
Administration
- Configuration Backup and Restore
- Diagnosis tools
- Feedback System
- System Log
More Information
Delivery Option | 15-20 Working Days |
---|---|
SKU | RT-AC51 |
Brands | Asus |
Networking Type | Wireless Router |
Networking Speed | 750Mbps |
Form Factor | Desktop |
Connectivity | Dual-band |
Ports | 1x RJ11 WAN; 4x 10/100Mbps LAN |
Standard | IEEE 802.11a/b/g/n/ac |
Protocol | IPv6, IPv4 |
Antenna Form | External Integrated |
Antenna | 4 |
Compatibility | Linux, Mac, Windows, Android, Apple iOS |
Control Method | App |
Colour | Black |
Condition | New |
Reviews
Search FAQs
Questions & Answers
Asus RT-AC51 802.11AC Dual Band Router Description
A solid choice for basic home networking and intensive applications alike is the Asus RT-AC51 802.11AC Dual Band Router. This dual-band Wi-Fi router networking task provides AC750 Wi-Fi ratings delivering combined speeds of up to 733 Mbps - 300 Mbps on 2.4GHz and 433 Mbps on 5GHz. Featuring four external antennas, with two dedicated to each of the 2.4GHz and 5GHz bands, the RT-AC51 router optimises its wireless performance by reducing signal loss and dead zones within the coverage area, working together to expand the router's coverage area, and providing multiple paths for data transmission. A USB Port is featured on this router to offer versatility for file sharing, printer sharing, or 3G/4G dongle support. Its Parental Control functionality helps protect children from inappropriate content. Enjoy the ASUSWRT dashboard UI and the supported ASUS Router App for easy setup and network management.
Dual Band
Dual-band Wi-Fi is a feature of the ASUS RT-AC51 802.11AC Router. Its 2.4 GHz band offers wider coverage and is compatible with older devices, while the 5 GHz band is best used for high-bandwidth activities like 4K streaming and online gaming. The 5 GHz Wi-Fi standard offers faster speed, handling more devices connected to the network simultaneously without experiencing slowdowns, managing data transmission more efficiently, minimising congestion and ensuring a smoother overall network experience, unlike the 2.4 GHz band. Hence the former is ideal for demanding tasks and the latter is suitable for general internet browsing, email, and social media.


Four External Antennas
Improving coverage and delivering multi-device performance, the ASUS RT-AC51 802.11AC Dual Band Router features four external antennas — two each for the 2.4 GHz and 5 GHz bands. These antennas reduce signal loss and dead zones within the home, work together to expand the router's coverage area, and provide multiple paths for data transmission. Dedicating two antennas to each frequency band allows for better optimization of signal strength and coverage for both the 2.4GHz and 5GHz networks.
ASUS Router App
The ASUS Router app is a convenient tool that puts control of your RT-AC51 802.11AC Dual Band Router's network at your fingertips. It offers remote network management allowing you to monitor and adjust router settings from your smartphone or tablet, regardless of your location, create and manage guest Wi-Fi networks with ease, quickly troubleshoot issues and optimise network performance, implement robust security measures to protect your network, update to the latest firmware versions, and lots more.

ASUSWRT UI
The ASUS RT-AC51 802.11AC Dual Band Router supports a comprehensive web-based platform - ASUSWRT. It features a graphical userfriendly interface - that provides configuring advanced features and monitors network performance with ease. With an easy 3-step setup, this interface makes your stay up easy and simple.
What's in the Box?
- Asus RT-AC51 802.11AC Dual Band Router
- RJ-45 Cable
- Power Adapter
- Quick Start Guide
Asus RT-AC51 802.11AC Dual Band Router Specifications
Technical
Model: RT-AC51
Network Standard
- IEEE 802.11a
- IEEE 802.11b
- IEEE 802.11g
- WiFi 4 (802.11n)
- WiFi 5 (802.11ac)
- IPv4
- IPv6
- IEEE 802.11e
- IEEE 802.11i
WiFi Data Rate
- 802.11a : up to 54 Mbps
- 802.11b : up to 11 Mbps
- 802.11g : up to 54 Mbps
- WiFi 4 (802.11n) : up to 300 Mbps
- WiFi 5 (802.11ac) : up to 433 Mbps
Antenna
- External antenna x 4
Transmit / Receive
- MIMO technology
- 2.4GHz 2x2
- 5GHz 2x2
Memory
- 16 MB Flash
- 64 MB RAM
Operating Frequency:
- 2.4GHz
- 5GHz
Operating Mode
- Accesspoint, Router
I/O Ports
- RJ45 for 10/100Mbps BaseT for WAN x 1
- RJ45 for 10/100Mbps BaseT for LAN x 4
Buttons: WPS Button, Reset Button, Power Button
Power Supply
- AC Input : 110V~240V(50~60Hz)
- DC Output : 12 V with max. 0.5 A current
Product Weight (g): 271 g
Product Dimensions: 177 x126 x 34 ~ mm (WxDxH)
Parental Control
- "Allow you to block access to unwanted websites and apps."
- Customized Internet Schedule
Guest Network
- "The Guest Network provides Internet connection for guests but restricts access to your local network."
- • Maximum Guest Network Rule : 2.4GHz x3, 5GHz x3
- Guest Network Connection Time Limit
- Guest Network Encryption : Open system, WPA/WPA2-Personal
Security
- Open system, WPA/WPA2-Personal, WPA/WPA2-Enterprise
- WPS
- SSH
- Firewall
- • Maximum Firewall Keyword Filter : 64
- • Maximum Firewall Network Service Filter : 32
- • Maximum Firewall URL Filter : 64
Traffic Control
- • Bandwidth Limiter
- -- Maximum Bandwidth Limiter Rule : 32
- Traditional QoS
- -- Maximum Traditional QoS Rule : 32
- Traffic Monitor
- • Real-time Traffic Monitor
- • Wired Traffic Monitor
- • Wireless Traffic Monitor
- • Traffic Analysis Period : Daily, Weekly, Monthly
WAN
- Internet connection Type : PPPoE, PPTP, L2TP, Automatic IP, Static IP
- Port forwarding
- • Maximum Port Forwarding Rule : 64
- Port triggering
- • Maximum Port Triggering Rule : 32
- DMZ
- DDNS
- NAT Passthrough : PPTP, L2TP, IPSec, RTSP, H.323, SIP Passthrough,PPPoE relay
LAN
- DHCP Server
- IGMP Snooping
- IPTV
- Manually Assign IP Address
- • Maximum Manually Assign IP Address Rule : 64
- Wake on LAN (WOL)
Wireless
- UTF-8 SSID
- WiFi MAC Address Filter
- • Maximum MAC Filters : 64
- Wireless Scheduler
- Airtime Fairness
- RADIUS Client
- Explicit Beamforming
USB application
- File System : FAT16, FAT32, NT3G
Administration
- Configuration Backup and Restore
- Diagnosis tools
- Feedback System
- System Log
Delivery Option | 15-20 Working Days |
---|---|
SKU | RT-AC51 |
Brands | Asus |
Networking Type | Wireless Router |
Networking Speed | 750Mbps |
Form Factor | Desktop |
Connectivity | Dual-band |
Ports | 1x RJ11 WAN; 4x 10/100Mbps LAN |
Standard | IEEE 802.11a/b/g/n/ac |
Protocol | IPv6, IPv4 |
Antenna Form | External Integrated |
Antenna | 4 |
Compatibility | Linux, Mac, Windows, Android, Apple iOS |
Control Method | App |
Colour | Black |
Condition | New |