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RT-AC66U B1

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Power Supply

AC Input : 110V~240V(50~60Hz) DC Output : 19V 3.42A

AC Input : 110V~240V(50~60Hz) DC Output : 19 V with max. 1.75 A current

AiProtection

• Router Security Assessment, • Malicious Site Blocking, • Two-Way IPS, • Infected Device Prevention and Blocking

Wireless

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

Memory

256 MB Flash, 1 GB RAM

WAN

Internet connection Type : PPPoE, PPTP, L2TP, Automatic IP, Static IP, Dual WAN, WAN Aggregation, 3G / 4G LTE dongle, 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, Dual WAN, 3G / 4G LTE dongle, 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

Network Standard

IPv6

IPv4

WiFi 6 (802.11ax)

WiFi 5 (802.11ac)

WiFi 4 (802.11n)

IEEE 802.11g

IEEE 802.11b

IEEE 802.11a

IPv6

IPv4

WiFi 5 (802.11ac)

WiFi 4 (802.11n)

IEEE 802.11g

IEEE 802.11b

IEEE 802.11a

Package Content

RJ45 x1 Adapter x1 QSG x1 Warranty Card x1 RT-AX89X x1

RT-AC66U Dual Band 3x3 802.11AC Gigibit Router RJ-45 cable Power adapter Quick start guide Warranty card

Product Weight (g)

1280 g

660 g

Traffic Control

Adaptive QoS, • Bandwidth Monitor, • 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 Analyzer, • Traffic Analysis Period : Daily, Weekly, Monthly, • Website History

AiMesh

AiMesh, • Primary AiMesh Router, • AiMesh Node

Product Dimensions

343.64*343.64*80mm

219 x 151 x 47 ~ mm (WxDxH) (Without Bezel)

Parental Control

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

LED Indicator

Power x 1 Wi-Fi x 3 WAN x 1 LAN x 1 10GE x 1 SFP+ x 1

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

Security

AiProtection, WPA3-PSK, WPA2-PSK, WPA-PSK, WPA-Enterprise , WPA2-Enterprise , WPS support,, WPS, Let's Encrypt, SSH, Firewall, • Maximum Firewall Keyword Filter : 64, • Maximum Firewall Network Service Filter : 32, • Maximum Firewall URL Filter : 64

AiProtection, 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

Guest Network

"The Guest Network provides Internet connection for guests but restricts access to your local network.", • Maximum Guest Network Rule : 2.4GHzx3、5GHzx3, 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

USB application

File System : FS_Tuxera_HFS+,FS_Tuxera_NTFS,FS_Tuxera_vFAT,FS_ext2,FS_ext3,FS_ext4, Safely Remove Disk, AiCloud, Download Master, AiDisk, Media Server, Time Machine, Samba Server, FTP Server, Shared Folder Privileges

File System : HFS+, NTFS, vFAT, ext2, ext3, ext4, HDD Hibernation, Safely Remove Disk, AiCloud, Download Master, AiDisk, Media Server, Time Machine, Samba Server, FTP Server, Shared Folder Privileges

Operating Frequency

2.4 GHz / 5 GHz

2.4G Hz / 5 GHz

Antenna

External antenna x 8

External antenna x 3

Game

Game Boost / Acceleration

Administration

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

Transmit / Receive

5GHz 8x8

2.4GHz 4x4

5GHz 3x3

2.4GHz 3x3

MIMO technology

LAN

DHCP Server, IGMP Snooping, IPTV, LAN Link Aggregation, 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)

Boosts Speed

OFDMA (Orthogonal Frequency Division Multiple Access), Beamforming: standard-based and universal, 1024-QAM high data rate, 20/40/80/160 MHz bandwidth,

Buttons

WPS Button, Reset Button, Power Button, Wireless on/off Button, LED on/off Button

WPS Button, Reset Button, Power Button

Operating Mode

Accesspoint, AiMeshnode, Mediabridge, Repeater, Router

I/O Ports

RJ45 for 10Gbps BaseT for WAN/LAN x 1, RJ45 for 1Gbps BaseT for LAN x 8, RJ45 for 1Gbps BaseT for WAN x 1 USB 3.1 Gen 1 x 2 SFP+ x 1

RJ45 for 10/100/1000 BaseT for WAN x 1, RJ45 for 10/100/1000 BaseT for LAN x 4 USB 2.0 x 1 USB 3.0 x 1

Processor

2.2GHz quad-core processor

WiFi Data Rate

WiFi 6 (802.11ax) (5GHz) : up to 4804 Mbps

WiFi 6 (802.11ax) (2.4GHz) : up to 1148 Mbps

WiFi 5 (802.11ac) : up to 4333 Mbps

WiFi 5 (802.11ac) : up to 1000 Mbps

WiFi 4 (802.11n) : up to 600 Mbps

802.11g : up to 54 Mbps

802.11b : up to 11 Mbps

802.11a : up to 54 Mbps

WiFi 5 (802.11ac) : up to 1300 Mbps

WiFi 4 (802.11n) : up to 450 Mbps

802.11g : up to 54 Mbps

802.11b : up to 11 Mbps

802.11a : up to 54 Mbps

VPN

VPN Client L2TP, VPN Client Open VPN, VPN Client PPTP, VPN Server IPSec, VPN Server Open VPN, VPN Server PPTP

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

Learn more Where to buy

- 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.
- 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.
- ASUS makes no representations or warranties about this product’s compatibility with future standards.
- 6GHz band is limited to indoor range. Clients must support 6GHz band.
- MU-MIMO capability requires both router and client device to support MU-MIMO.
- For models with Time machine support, starting with macOS 26 (Tahoe), Time Machine no longer supports creating new backups on USB-connected storage devices. Existing Time Machine drives that were previously configured remain compatible and can continue to be used for backup and restoration.
- 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.
- For models with Time machine support, starting with macOS 26 (Tahoe), Time Machine no longer supports creating new backups on USB-connected storage devices. Existing Time Machine drives that were previously configured remain compatible and can continue to be used for backup and restoration.