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Network Standard
IEEE 802.11a
IEEE 802.11b
IEEE 802.11g
WiFi 4 (802.11n)
WiFi 5 (802.11ac)
WiFi 6 (802.11ax)
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
Product Segment
AX1800 ultimate AX performance: 1201Mbps+574Mbps
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 400 Mbps
WiFi 5 (802.11ac) : up to 867 Mbps
WiFi 6 (802.11ax) (2.4GHz) : up to 574 Mbps
WiFi 6 (802.11ax) (5GHz) : up to 1201 Mbps
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
2 x External antenna + 2 x Internal antenna
External antenna x 4
Interface
1 x USB 3.2 Gen1
Transmit / Receive
MIMO technology
2.4GHz 2x2
5GHz 2x2
Memory
16 MB Flash 64 MB RAM
WiFi Encryption
64/128 bit WEP, WPA, TKIP, AES, WPA-PSK, WPA2-PSK, WPA3-Personal/Enterprise
Operating Frequency
Dual band 2.4GHz & 5GHz
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
OS Support
OS Support : Windows 10 Windows 11
Buttons
WPS Button, Reset Button, Power Button
Product Weight (g)
40.3 g/ 1.42 oz
271 g
Power Supply
AC Input : 110V~240V(50~60Hz) DC Output : 12 V with max. 0.5 A current
Product Dimensions
115 x 30 x 17.5 mm/ 4.52 x 1.18 x 0.69 inch
177 x126 x 34 ~ mm (WxDxH)
Package Content
RT-AC51 Wi-Fi router 1 x RJ-45 cable 1 x Power adapter 1 x QSG 1 x Warranty card
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
    • 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 specifications. Actual performance may be affected by network and service provider factors, interface type, and other conditions. Connected devices must be 802.11ac-compatible for best results.
    • WPA/WPA2 enterprise is only available on single router, is not available under AiMesh mode.
    • 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 specifications. Actual performance may be affected by network and service provider factors, interface type, and other conditions. Connected devices must be 802.11ac-compatible for best results.
    • WPA/WPA2 enterprise is only available on single router, is not available under AiMesh mode.