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White rectangular Wi-Fi 6 router with four adjustable external antennas and LED indicator lights

ASUS

ASUS RT-AX1800S Wi-Fi 6 wireless router

SKU CH-YFZT-WY0JV MPN RT-AX1800S

A Wi-Fi 6 router delivering up to 1800 Mbps across dual bands with four external antennas, four Gigabit LAN ports, and AiProtection Classic security

  • Wi-Fi standardWi-Fi 6
  • Wireless standardsIEEE 802.11a / IEEE 802.11ac / IEEE 802.11ax / IEEE 802.11b
  • WAN interfaces1 × 10/100/1000M
  • Supported standards802.11ac
  • Device managementApplication
  • Security featuresWPA/WPA 2/WPA 3

Version RT-AX1800S

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Wireless Speed Dual Band WiFi 6

  • Wi-Fi 6 delivers up to 1.8 Gbps total wireless throughput
  • 1024-QAM modulation boosts 5 GHz speeds to 1201 Mbps
  • MU-MIMO plus OFDMA serves many devices at once
  • Five Gigabit ports give wired gear 1000 Mbps links
  • AiProtection Classic blocks threats for every connected device

AX1800 dual-band Wi-Fi 6 router

The ASUS RT-AX1800S is a dual-band wireless router built on the Wi-Fi 6 (802.11ax) standard. It delivers a total networking speed of approximately 1800Mbps, split between 574 Mbps on the 2.4 GHz band and 1201 Mbps on the 5 GHz band. The design targets households with many simultaneous connections, using MU-MIMO and OFDMA to serve multiple devices at once. It is not suited for buyers who require multi-gigabit WAN or LAN ports beyond 1 Gbps.

Thermals noise and power

The unit operates from an external power adapter accepting 110V to 240V AC input at 50 to 60 Hz and providing 12 V DC at up to 1.5 A. No active cooling fan is mentioned in the specifications, so silent running can be expected in normal use. Power draw scales with wireless load across the two bands. There are no figures supplied for idle or peak thermal output.

Build connectors and mounting

The chassis measures 9.06 inches by 5.28 inches by 2.2 inches and carries four external antennas. Connectivity includes one Gigabit WAN port and four Gigabit LAN ports, all running at 10/100/1000 Mbps. Status LEDs cover power, 2.4 GHz, 5 GHz, LAN and WAN activity. Physical controls comprise a WPS button, a reset button and a power switch. Management is handled via a dedicated application.

How it compares

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

Price $57.99
Cheaper than about 76% of the 495 comparable items (median $126.99).

Specifications

Product
Brand nameASUS
Model nameRT-AX1800S
Part numberRT-AX1800S
Performance
Data throughput1,800 Mbit/s
Connectivity
Wi-Fi standardWi-Fi 6
Wireless standardsIEEE 802.11a / IEEE 802.11ac / IEEE 802.11ax / IEEE 802.11b / IEEE 802.11n
Supported standards802.11ac
Wireless speedAX1800 / Up to 1.8 Gbit/s
Operating distanceUp to 1,400 sq ft
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
Size & build
Product dimensions9.06 in × 5.28 in × 2.2 in
Shipping weight1.36 kg
Package size366 × 231 × 76 mm
In the box
In the boxNighthawk AC1900 WiFi Cable Modem Router (C7000)^Ethernet cable^Quick install guide^Power adapter
More details
Device managementApplication
Security featuresWPA/WPA 2/WPA 3
WPAWPA2-PSK, WPA-PSK
Indicator lights1 x Power
1 × 2.4G
1 × 5G
1 x LAN
1 x WAN
Button countWPS Button, Reset Button, Power Switch

Other versions of this model

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Questions about this item

How do I set up the RT-AX1800S using the ASUS app, and which port do I plug the modem cable into?

Connect the modem to the single Gigabit WAN port, power on the router, then follow the ASUS Router app wizard to configure the SSID, password and security settings.

Will the four external antennas or the Trend Micro AiProtection subscription need replacing over time?

The four external antennas are fixed and require no replacement; AiProtection Classic is included for the life of the product with no subscription fee.

At what point does the 1.5 A power adapter become the bottleneck during heavy 5 GHz traffic?

The 12 V 1.5 A adapter supplies up to 18 W, which covers the router's maximum draw even when the 5 GHz band runs at its 1201 Mbps link rate.

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