AX1800 Dual Band WiFi 6 (802.11ax) Router supporting MU-MIMO and OFDMA technology, with AiProtection Classic network security powered by Trend Micro™, compatible with ASUS AiMesh WiFi system  

• Next-Gen WiFi Standard - Supporting the latest WiFi standard WiFi 6 (802.11ax) for better capacity and efficiency
• Ultra-fast WiFi Speed – RT-AX55 supports 1024-QAM for dramatically faster wireless connections. With a total networking speed of about 1800Mbps — 574 Mbps on the 2.4GHz band and 1201 Mbps on the 5GHz band.
• Increase Capacity and Efficiency – Supporting not only MU-MIMO but also OFDMA technique to efficiently allocate channels, communicate with multiple devices simultaneously
• Protection for Your Home Network– lifetime free AiProtection, powered by Trend Micro™, blocks internet security threats for all your connected smart devices.
• Better Partner with Mesh System- Compatible with ASUS AiMesh WiFi system for seamless whole-home coverage.
• NitroQAM™ (1024-QAM) technology - NitroQAM™ (1024-QAM) technology enables a 25% data rate while the older standard is limited to 256-QAM.

techspec  

Model Name
RT-AX55
RT-AX56U V2
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
Product Segment
AX1800 ultimate AX performance : 1201 Mbps+ 574 Mbps
AX technology
Yes
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
802.11ax (2.4GHz) : up to 574 Mbps
802.11ax (5GHz) : up to 1201 Mbps
Antenna
External antenna x 4
External antenna x 2
Transmit/Receive
2.4 GHz 2 x 2
5 GHz 2 x 2
Processor
1.5GHz quad-core processor
Memory
128 MB Flash
256 MB RAM
256 MB Flash
512 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
Operating Frequency
2.4G Hz / 5 GHz
Ports
RJ45 for Gigabits BaseT for WAN x 1, RJ45 for Gigabits BaseT for LAN x 4
RJ45 for Gigabits BaseT for WAN x 1, RJ45 for Gigabits BaseT for LAN x 4
USB 2.0 x 1
USB 3.1 Gen 1 x 1
Button
WPS Button, Reset Button, Power Switch
LED Indicator
Power x 1
2.4G x 1
5G x 1
LAN x 1
WAN x 1
Power x 1
2.4G x 1
5G x 1
LAN x 4
WAN x 1
Power Supply
AC Input : 110V~240V(50~60Hz)
DC Output : 12 V with max. 1 A current
AC Input : 110V~240V(50~60Hz)
DC Output : 12 V with max. 2 A current
Package content
RT-AX55
RJ45 x1
Adapter x1
QSG x1
Warranty Card x1
RT-AX56U
RJ45 x1
Adapter x1
QSG x1
Warranty Card x1
Product Weight (g)
374g
456 g
AiMesh
AiMesh : Yes
Primary AiMesh router : Yes
AiMesh node : Yes
Router APP
ASUS Router APP : Yes
Game
Game Boost/acceleration : No
WTFast : No
Alexa
Support Alexa skil : Yes
IFTTT
Support IFTTT : No
Support IFTTT : Yes
AiProtection
AiProtection : AiProtection Classic
AiProtection : AiProtection Pro
Router Security Assessment : Yes
Malicious site blocking : Yes
Two-Way IPS : No
Two-Way IPS : Yes
Infected Device Prevention and Blocking ; Yes
Parental Control
Parental Control : Yes
Parental Control Customized Internet schedule : Yes
Traffic Control
Adaptive QoS : No
Adaptive QoS : Yes
Bandwidth Monitor : Yes
Bandwidth limiter : Yes
Maximum Bandwidth limiter rule : 32
Traditional QoS : Yes
Maximum Traditional QoS rule : 32
Traffic Monitor : Yes
Real-time traffic monitor : Yes
Wired Traffic Monitor : Yes
Wireless Traffic Monitor : Yes
Traffic Analyzer : Yes
Traffic analysis period : Daily, Weekly, Monthly
Website history : Yes
Wireless
IPv6 : Yes
MU-MIMO : Yes
Wi-Fi Encryption : Open system, WPA/WPA2-Personal, WPA/WPA2-Enterprise, WPA3-Personal
Wi-Fi Encryption : Open system, WPA/WPA2-Personal, WPA/WPA2-Enterprise
UTF-8 SSID : Yes
Guest Network : Yes
Maximum Guest Network rule : 2.4GHz x3, 5GHz x3
Guest Network Encryption : Open system, WPA/WPA2-Personal
WPS : Yes
Wi-Fi MAC address filter : Yes
Maximum MAC filters : 64
Wireless scheduler : Yes
Airtime fairness : Yes
RADIUS Server : Yes
Universal beamforming : Yes
Explicit beamforming : Yes
IGMP snooping : Yes
WAN
Internet connection Type : PPPoE, PPTP, L2TP, Automatic IP, Static IP
Dual WAN : Yes
WAN Aggregation : No
3G/4G LTE dongle : No
3G/4G LTE dongle : Yes
Android tethering : Yes
Port forwarding : Yes
Maximum port forwarding rule : 64
Port triggering : Yes
Let's Encrypt : Yes
Maximum port triggering rule : 32
DMZ : Yes
DDNS : Yes
NAT Passthrough : PPTP, L2TP, IPSec, RTSP, H.323, SIP Passthrough,PPPoE relay
LAN
DHCP Server : Yes
IPTV : Yes
LAN Link Aggregation : No
LAN Link Aggregation : Yes
Manually assign IP address : Yes
Maximum manually assign IP address rule : 64
VPN
VPN Client L2PT : Yes
VPN Client OVPN : Yes
VPN Client PPTP : Yes
VPN Server IPSec : Yes
VPN Server OVPN : Yes
VPN Server PPTP : Yes
VPN Fusion : No
USB application
3G/4G LTE dongle : No
File System : HFS+, NTFS, vFAT, ext2, ext3, ext4
HDD hibernation : No
3G/4G LTE dongle : Yes
Safely Remove disk : No
HDD hibernation : Yes
AiCloud : No
Safely Remove disk : Yes
Download master : No
AiCloud : Yes
AiDisk : No
Download master : Yes
Media Server : No
AiDisk : Yes
Time Machine : No
Media Server : Yes
Samba Server : No
Time Machine : Yes
FTP Server : No
Samba Server : Yes
Shared Folder privileges : No
FTP Server : Yes
Shared Folder privileges : Yes
Administration
Operating mode : Access Point, AiMesh Node, Media Bridge, Repeater, Router
Operating system : ASUSWRT
Free OS upgrade : Yes
Firewall : Yes
Maximum Firewall keyword filter : 64
Maximum Firewall network service filter : 32
Maximum Firewall URL filter : 64
Wake on LAN (WOL) : Yes
SSH : Yes
Configuration backup and restore : Yes
Diagnosis tools : Yes
Feedback system : Yes
System log : Yes

See more details at asus.com