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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
"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

Package Content

RT-AC51 Wi-Fi router
1 x RJ-45 cable
1 x Power adapter
1 x QSG
1 x Warranty card
1 x RT-AC2400 Dual Band Wireless-AC2400 Gigabit Router
1 x RJ-45 cable
1 x Power adapter
1 x QSG
1 x Warranty card

I/O Ports

RJ45 for 10/100Mbps BaseT for WAN x 1
RJ45 for 10/100Mbps BaseT for LAN x 4
RJ45 for 10/100/1000/Gigabits BaseT for WAN x 1, RJ45 for 10/100/1000/Gigabits BaseT for LAN x 4
USB 3.1 Gen 1 x 1

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
• 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

Parental Control

"Allow you to block access to unwanted websites and apps."
Customized Internet Schedule
"Allow you to block access to unwanted websites and apps."
Customized Internet Schedule

Product Weight (g)

271 g
533 g

Transmit / Receive

MIMO technology
2.4GHz 2x2
5GHz 2x2
2.4GHz 3x3
5GHz 4x4

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

Memory

16 MB Flash
64 MB RAM

Wireless

UTF-8 SSID
WiFi MAC Address Filter
• Maximum MAC Filters : 64
Wireless Scheduler
Airtime Fairness
RADIUS Client
Explicit Beamforming
UTF-8 SSID
WiFi MAC Address Filter
• Maximum MAC Filters : 64
Wireless Scheduler
RADIUS Client
Explicit Beamforming

Administration

Configuration Backup and Restore
Diagnosis tools
Feedback System
System Log
Configuration Backup and Restore
Diagnosis tools
Feedback System
System Log

Antenna

External antenna x 4
External antenna x 3
Internal antenna x 1

VPN

VPN Client L2TP
VPN Client Open VPN
VPN Client PPTP
VPN Server Open VPN
VPN Server PPTP

LAN

DHCP Server
IGMP Snooping
IPTV
Manually Assign IP Address
• Maximum Manually Assign IP Address Rule : 64
Wake on LAN (WOL)
DHCP Server
IGMP Snooping
IPTV
Manually Assign IP Address
• Maximum Manually Assign IP Address Rule : 64
Wake on LAN (WOL)

Operating Frequency

2.4GHz
5GHz
2.4G Hz / 5 GHz

Buttons

WPS Button, Reset Button, Power Button
WPS Button, Reset Button, Power Button

Operating Mode

Accesspoint, Router
Accesspoint, Router

LED Indicator

Power x 1
LAN x 4
WAN x 1
Wi-Fi x 2

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
IEEE 802.11a
IEEE 802.11b
IEEE 802.11g
WiFi 4 (802.11n)
WiFi 5 (802.11ac)

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
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

USB application

File System : FAT16, FAT32, NT3G
File System : FAT16, FAT32, NT3G, ext2, ext3
HDD Hibernation
Safely Remove Disk
AiDisk
Media Server
Samba Server
FTP Server
Shared Folder Privileges

Product Dimensions

177 x126 x 34 ~ mm (WxDxH)
220 x 87 x 158 ~ mm (WxDxH)

Power Supply

AC Input : 110V~240V(50~60Hz)
DC Output : 12 V with max. 0.5 A current
AC Input : 110V~240V(50~60Hz)
DC Output : 12 V with max. 2.5 A current

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
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
    • The actual transfer speed of USB 3.0, 3.1, 3.2, and/or Type-C will vary depending on many factors including the processing speed of the host device, file attributes and other factors related to system configuration and your operating environment.
    • Actual data throughput and WiFi coverage will vary from network conditions and environmental factors, including the volume of network traffic, building material and construction, and network overhead, result in lower actual data throughput and wireless coverage.
    • Quoted network speeds and bandwidth based on current IEEE 802.11ac/802.11ax specifications. Actual performance may be affected by network and service provider factors, interface type, and other conditions. Connected devices must be 802.11ac/802.11ax compatible for best results.
    • WPA/WPA2 enterprise is only available on single router, is not available under AiMesh mode.
    • When traditional QoS is enabled, there will be limitations due to the actual Internet service bandwidth and different environment, and there may be a risk of speed reduction.
    • Due to the different power supply requirements on USB external hard disk and 4G/5G Modem device, to ensure that the external device can be used stably, if the USB external device exceeds the standard USB 2.0 (5V/500mA) and USB 3.1 Gen 1 (5V/900mA) power supply requirements, you need to use it with an independent external power supply.
    • If you use the product in conjunction with a third party service, you are responsible for complying with the third party provider's terms and conditions and privacy policy and are also at the risk of such use. ASUS does not provide support or guarantee continuous integration support for products that are not part of ASUS.