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Power Supply

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

AC Input : 110V~240V(50~60Hz) DC Output : 19 V with max. 2.37 A current

Product Weight (g)

660 g

110g

AiMesh

AiMesh, • Primary AiMesh Router, • AiMesh Node

AiProtection

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

Guest Network

Yes, • Maximum Guest Network Rule : 2.4GHz x3, 5GHz x3, Guest Network Connection Time Limit, Guest Network Encryption : Open system, WPA/WPA2-Personal

Parental Control

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

Boosts Speed

Beamforming: standard-based and universal 1024-QAM high data rate 20/40/80 MHz bandwidth

Operating Mode

Accesspoint, AiMeshnode, Mediabridge, Repeater, Router

LED Indicator

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

Dual color Link/ Act LED

USB application

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

I/O Ports

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

RJ45 for Gigabits BaseT for WAN x 1, RJ45 for Gigabits BaseT for LAN x 8, USB 3.2 Gen 1 x 1 USB 2.0 x 1

Buttons

WPS Button, Reset Button, Power Button

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

Product Dimensions

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

113.33*120.5*21.59 mm

Operating Frequency

2.4G Hz / 5 GHz

WAN

Internet connection Type : PPPoE, PPTP, L2TP, Automatic IP, Static IP, Yes, 3G / 4G LTE dongle, Yes, • Maximum Port Forwarding Rule : 64, Yes, • Maximum Port Triggering Rule : 32, Yes, Yes, NAT Passthrough : PPTP, L2TP, IPSec, RTSP, H.323, SIP Passthrough,PPPoE relay

Administration

Yes, Yes, Yes, Yes

Transmit / Receive

5GHz 3x3
2.4GHz 3x3
MIMO technology

5GHz 4x4
2.4GHz 4x4
MIMO technology

Processor

1.4 GHz dual-core processor

Network Standard

IPv6
IPv4
WiFi 5 (802.11ac)
WiFi 4 (802.11n)
IEEE 802.11g
IEEE 802.11b
IEEE 802.11a

VPN

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

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

LAN

DHCP Server, Yes, IPTV, Manually Assign IP Address, • Maximum Manually Assign IP Address Rule : 64, Yes

DHCP Server, Yes, IPTV, LAN Link Aggregation, Manually Assign IP Address, • Maximum Manually Assign IP Address Rule : 64, Yes

Package Content

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

WiFi Data Rate

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

1024QAM (5GHz) : up to 2167 Mbps
1024QAM (2.4GHz) : up to 1000 Mbps
WiFi 5 (802.11ac) : up to 1734 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

Antenna

External antenna x 3

External antenna x 4

Security

AiProtection, Open system, WPA/WPA2-Personal, WPA/WPA2-Enterprise, Yes, Yes, Yes, • Maximum Firewall Keyword Filter : 64, • Maximum Firewall Network Service Filter : 32, • Maximum Firewall URL Filter : 64

Product Segment

AC3100 ultimate AC performance : 1000+2167 Mbps

Traffic Control

Yes, • Bandwidth Monitor, • Bandwidth Limiter, -- Maximum Bandwidth Limiter Rule : 32, Yes, -- Maximum Traditional QoS Rule : 32, Yes, • Real-time Traffic Monitor, • Wired Traffic Monitor, • Wireless Traffic Monitor, Yes, • Traffic Analysis Period : Daily, Weekly, Monthly, Yes

Wireless

Yes, WiFi MAC Address Filter, • Maximum MAC Filters : 64, Yes, Yes, RADIUS Client, Yes, Yes

Game

Game Boost / Acceleration, WTFast

Memory

128 MB Flash, 516 MB RAM

- 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.