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RT-AC66U B1

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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)
IPv4
IPv6

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

AX technology

Yes

Product Segment

AX1800 ultimate AX performance : 1201 Mbps+ 574 Mbps

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 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 450 Mbps
WiFi 5 (802.11ac) : up to 1300 Mbps

Antenna

Ex-antennas*4

External antenna x 3

Transmit/Receive

2.4GHz 2x2
5GHz 2x2

MIMO technology
2.4GHz 3x3
5GHz 3x3

Operating Frequency

2.4G Hz / 5 GHz

Ports

RJ45 for Gigabits BaseT for WAN x 1, RJ45 for Gigabits BaseT for LAN x 3,USB Port x1

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

Dual-core (4 VPE)

Button

WPS Button, Reset Button, Power Switch

WPS Button, Reset Button, Power Button

Memory

128 MB Flash 256 MB RAM

Boosts speed

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

LED Indicator

Power x 1 2.4G x 1 5G x 1 LAN x 3 WAN x 1 USBX1

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

Power Supply

AC Input : 100V~240V(50~60Hz) DC Output : 12 V with max. 1.5A current

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

Package content

RT-AX53U RJ45 x1 Adapter x1 QSG x1 Warranty Card x1

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

Product Weight (g)

346g

660 g

AiMesh

AiMesh
Primary AiMesh router
AiMesh node

Router APP

ASUS Router APP

AiProtection

AiProtection Classic
Malicious site blocking
Infected Device Prevention and Blocking

AiProtection Pro
AiProtection
Malicious site blocking
Two-Way IPS
Infected Device Prevention and Blocking

Parental Control

Parental Control
Parental Control Customized Internet schedule

Traffic Control

Bandwidth limiter
Yes
Real-time traffic monitor
Wired Traffic Monitor
Wireless Traffic Monitor

Bandwidth Monitor
Bandwidth limiter
Maximum Bandwidth limiter rule : 32
Maximum Traditional QoS rule : 32
Real-time traffic monitor
Wired Traffic Monitor
Wireless Traffic Monitor
Traffic analysis period : Daily, Weekly, Monthly
Yes

Wireless

Wi-Fi Encryption : Open system, WPA/WPA2-Personal, WPA/WPA2-Enterprise, WPA3-Personal
WiFi MAC address filter
RADIUS Client
Yes

Wi-Fi Encryption : Open system, WPA/WPA2-Personal, WPA/WPA2-Enterprise
Maximum Guest Network rule : 2.4GHz x3, 5GHz x3
Guest Network Connection time limit
Guest Network Encryption : Open system, WPA/WPA2-Personal
WiFi MAC address filter
Maximum MAC filters : 64
RADIUS Client
Yes

Alexa

Support Alexa skill

WAN

Internet connection Type : PPPoE, PPTP, L2TP, Automatic IP, Static IP
3G/4G LTE dongle
Yes
Let's Encrypt

Internet connection Type : PPPoE, PPTP, L2TP, Automatic IP, Static IP
3G/4G LTE dongle
Android tethering
Maximum port forwarding rule : 64
Maximum port triggering rule : 32
Yes
NAT Passthrough : PPTP, L2TP, IPSec, RTSP, H.323, SIP Passthrough,PPPoE relay

LAN

DHCP Server
IPTV
Manually assign IP address

DHCP Server
IPTV
Manually assign IP address
Maximum manually assign IP address rule : 64

VPN

VPN Client L2TP
VPN Client OVPN
VPN Client PPTP
VPN Server IPSec
VPN Server OVPN
VPN Server PPTP

VPN Client L2TP
VPN Client OVPN
VPN Client PPTP
VPN Server OVPN
VPN Server PPTP

USB application

3G/4G LTE dongle
Safely Remove disk
Download master
AiDisk
Media Server
Samba Server
FTP Server
Shared Folder privileges

File System : HFS+, NTFS, vFAT, ext2, ext3, ext4
3G/4G LTE dongle
HDD hibernation
Safely Remove disk
AiCloud
Download master
AiDisk
Media Server
Time Machine
Samba Server
FTP Server
Shared Folder privileges

Administration

Operating mode : Access Point, Media Bridge, Repeater, Router
Operating system : ASUSWRT
Free OS upgrade
Yes

Operating mode : Accesspoint, AiMeshnode, Mediabridge, Repeater, Router
Operating system : ASUSWRT
Free OS upgrade
Maximum Firewall keyword filter : 64
Maximum Firewall network service filter : 32
Maximum Firewall URL filter : 64
Yes

- 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.

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