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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

  • Standards802_11_AC
  • WiFi GenerationWi-Fi 6
  • Wireless StandardIEEE 802.11a / IEEE 802.11ac / IEEE 802.11ax / IEEE 802.11b
  • Device Managementapplication
  • SecurityWPA/WPA 2/WPA 3
  • WPAWPA2-PSK, WPA-PSK

Class RT-AX1800S

Show 2 more configurations

Struck-through versions exist but are not stocked here.

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.

Highlights

  • 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

Specifications

BrandASUS
ModelRT-AX1800S
Part NumberRT-AX1800S
Standards802_11_AC
WiFi GenerationWi-Fi 6
Wireless StandardIEEE 802.11a / IEEE 802.11ac / IEEE 802.11ax / IEEE 802.11b / IEEE 802.11n
Device Managementapplication
SecurityWPA/WPA 2/WPA 3
WPAWPA2-PSK, WPA-PSK
WAN Ports1 x 10/100/1000M
LAN Ports4 x 10/100/1000M
LEDs1 x Power
1 x 2.4G
1 x 5G
1 x LAN
1 x WAN
ButtonsWPS Button, Reset Button, Power Switch
Wireless Data RatesAX1800 / Up to 1.8Gbps
Throughput1800 megabits_per_second
Operating RangeUp to 1,400 sq ft
Frequency Band2.4 GHz / 5 GHz
Antenna4 x External antenna
Power SupplyAC Input : 110V~240V(50~60Hz)
DC Output : 12 V with max. 1.5A current
Dimensions9.06 inches x 5.28 inches x 2.2 inches
Package ContentsNighthawk AC1900 WiFi Cable Modem Router (C7000)^Ethernet cable^Quick install guide^Power adapter
Shipping weight1.36 kg
Package size366 × 231 × 76 mm

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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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