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White rectangular router with four adjustable external antennas and front LED indicators

ASUS

ASUS RT-AX1800S/CA Wi-Fi 6 wireless router

SKU CH-GVVT-PHZNY

A Wi-Fi 6 dual-band router delivering up to 1800 Mbps with MU-MIMO, OFDMA and four external antennas for whole-home coverage

  • CPUDual-code (4 VPE)
  • Wi-Fi standardWi-Fi 6
  • Wireless standardsIEEE 802.11a / IEEE 802.11ac / IEEE 802.11b / IEEE 802.11g /
  • WAN interfaces1 × 10/100/1000M
  • Network ports4 × 10/100/1000M
  • Indicator lights1 x Power 1 × 2.4G 1 × 5G 1 x LAN 1 x WAN
  • Wi-Fi 6 (802.11ax) with MU-MIMO and OFDMA handles many devices efficiently
  • Up to 1.8 Gbps total speed — 574 Mbps on 2.4 GHz and 1201 Mbps on 5 GHz
  • Four external antennas plus 80 MHz bandwidth extend coverage through walls
  • AiProtection Classic powered by Trend Micro blocks threats for every connected device
  • Five Gigabit ports — one WAN and four LAN — deliver 1000 Mbps wired links

ASUS RT-AX1800S/CA Wi-Fi 6 Router

The ASUS RT-AX1800S/CA is a dual-band Wi-Fi 6 wireless router designed for households upgrading to the 802.11ax standard. It delivers combined wireless speeds up to 1800 Mbps with 574 Mbps on the 2.4 GHz band and 1201 Mbps on the 5 GHz band. Four external antennas support MU-MIMO and OFDMA for simultaneous device communication. AiProtection Classic powered by Trend Micro provides network security for connected devices.

Check Your ISP Modem and Client Devices

Verify that your internet service provider modem or gateway offers a Gigabit Ethernet WAN handoff to use the 10/100/1000M WAN port. Confirm that your laptops, phones or IoT gear support Wi-Fi 6 (802.11ax) to benefit from 1024-QAM and OFDMA efficiency gains. Ensure you have a standard mains outlet for the 12 V 1.5 A power adapter operating on 110 V to 240 V at 50 Hz to 60 Hz. The router includes WPS and reset buttons plus a power switch for basic control.

Wired and Wireless Expansion

Connect up to four wired clients such as PCs, NAS units or smart TVs to the four Gigabit LAN ports for 1000 Mbps links. The dual-band radios free the 2.4 GHz band for legacy devices while moving high-throughput traffic to the 5 GHz band. VPN client support for L2TP, OpenVPN and PPTP plus VPN server options for IPsec, OpenVPN and PPTP allow secure remote access without extra hardware. Status LEDs for power, 2.4G, 5G, LAN and WAN give at-a-glance link health.

How it compares

Measured against everything we stock in Wi-Fi Routers, at today’s prices. Recalculated every night.

Price $104.99
Cheaper than about 58% of the 495 comparable items (median $126.99).

Specifications

Product
Brand nameASUS
Model nameRT-AX1800S/CA
Processor
CPUDual-code (4 VPE)
Connectivity
Wi-Fi standardWi-Fi 6
Wireless standardsIEEE 802.11a / IEEE 802.11ac / IEEE 802.11b / IEEE 802.11g / IEEE 802.11n
Wireless speedAX1800 / Up to 1.8 Gbit/s
Radio bands2.4 GHz / 5 GHz
Antenna configuration4 x External antenna
Ports & slots
WAN interfaces1 × 10/100/1000M
Network ports4 × 10/100/1000M
Power
Power supplyAC Input : 110 V~240 V(50 to 60 Hz)
DC Output : 12 V with max. 1.5A current
Compatibility
VPN supportVPN Client L2PT : Yes
VPN Client OVPN : Yes
VPN Client PPTP : Yes
VPN Server IPSec : Yes
VPN Server OVPN : Yes
VPN Server PPTP : Yes
More details
Indicator lights1 x Power
1 × 2.4G
1 × 5G
1 x LAN
1 x WAN
Button countWPS Button, Reset Button, Power Switch

Questions about this item

What comes in the box with the RT-AX1800S/CA router and do I need to buy any cables separately?

The router ships with four external antennas, a 12 V 1.5 A power adapter and one Gigabit WAN port plus four Gigabit LAN ports for wired connections. Ethernet cables for those ports are not included.

The spec lists 574 Mbps on 2.4 GHz and 1201 Mbps on 5 GHz — which band should I prioritise for my devices?

Use the 5 GHz band for devices that support Wi-Fi 6 and need the 1201 Mbps link rate; keep 2.4 GHz for older clients or longer range where its 574 Mbps maximum is sufficient.

What does the AX1800 1.8 Gbps total mean for actual throughput in my home?

The 1800 Mbps figure combines the 574 Mbps 2.4 GHz and 1201 Mbps 5 GHz PHY rates; real-world throughput will be lower and depends on client capabilities, channel width and interference.

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