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ASUS RT-AX1800S

ASUSHome router

RT-AX1800S

Released July 2021.4Owner's manualdlcdnets.asus.com/pub/ASUS/wireless/RT-AX1800S/A18726_RT-AX1800S_Booklet_140x100mm_QSG_WEB.pdfRead 15 October 2026The model-specific RT-AX1800S quick start booklet was created on 30 June 2021 and the ASUS download list shows it posted on 2021-07-05. The English one-page guide was posted on 2021-07-07. Search results for retailer listings give 19 November 2021 as the first available date at Newegg and Shopabunda, but those pages could not be opened and the Amazon page prints no date. No launch article was found, so July 2021 is the best supported month. It is an early documentation date and not a confirmed retail date. Last checked 15 October 2026.

Form factor
Router
Wi-Fi
Wi-Fi 6
Speed class
AX1800
WAN port
1Gbps

50 of 90 fields known.

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At a glance

Ports

  • 5 RJ45

All specs

SourceCalculated

General

Series
Not available
Model numbers
RT-AX1800S2Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800sRead 15 October 2026The page is titled RT-AX1800S. ASUS also sells an RT-AX1800S V2, which its support lists separately. This entry follows the spec page, whose Dual-core (4 VPE) processor row fits the original MediaTek MT7621 board, see the OpenWrt note.
GTIN / EAN
1955532079428Retailer pageamazon.com/dp/B09M9477NSRead 15 October 2026Product details: UPC 195553207942, manufacturer part number RT-AX1800S.
Announced
Not available
Status
Available2Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800sRead 15 October 2026The US page is live and its structured data shows an in-stock offer.
Predecessor
Not available
Successor
Not available
Launch price (US)
Not available
Launch price (EU)
Not available
Markets
Not available
Colours
Black8Retailer pageamazon.com/dp/B09M9477NSRead 15 October 2026Product details: Color BLACK.
Form factor
Router2Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800sRead 15 October 2026A single 2x2 dual-band router with AiMesh as an option, so it is a router and not a mesh system.
Segment
Home2Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800sRead 15 October 2026The page sits under WiFi Routers, ASUS WiFi Routers, not under ROG gaming or ExpertWiFi.

Wi-Fi

Wi-Fi
Wi-Fi 61Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026
Wi-Fi speed class
AX18001Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Product Segment: AX1800 ultimate AX performance, 1201 Mbps + 574 Mbps.
Wi-Fi radios
BandWi-FiStreamsMax channel width (MHz)Max link rate (Mbps)Dedicated backhaul
2.4 GHzWi-Fi 6240574No
5 GHzWi-Fi 62801,201No
Source1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026WiFi Data Rate: Wi-Fi 6 5GHz up to 1201 Mbps and 2.4GHz up to 574 Mbps. Transmit/Receive: 5GHz 2x2 and 2.4GHz 2x2. The page lists 20/40/80 MHz bandwidth for the router as a whole. The 2.4 GHz channel is stored as 40 MHz, since 40 MHz is the widest 802.11ax channel on that band and 574 Mbps is the 2-stream 40 MHz rate.
Radio bands
2
6 GHz band
No
Combined Wi-Fi link rate
1,775Mbps
Wi-Fi streams
4
Max Wi-Fi channel width
80MHz
Wi-Fi features
OFDMA, MU-MIMO, Beamforming, Target Wake Time1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Boosts Speed: OFDMA and beamforming, standard-based and universal.2Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800sRead 15 October 2026The page names OFDMA with MU-MIMO and says Target Wake Time lets the RT-AX1800S schedule device transmit times.7Reviewtomshardware.com/reviews/asus-rt-ax1800s-routerRead 15 October 2026Review published 27 July 2023. Its spec table lists OFDMA and MU-MIMO and standard-based and universal beamforming.
External antennas
41Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Antenna: External antenna x 4.
Internal antennas
Not available
Detachable antennas
Not available
Coverage of one unit (claimed)
Not available
Connected devices per unit (claimed)
Not available

Ports and modem

Ports
PortCountRoleMax speed (Gbps)
RJ451WAN1
RJ454LAN1
Source1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026I/O Ports: RJ45 for Gigabits BaseT for WAN x 1 and RJ45 for Gigabits BaseT for LAN x 4. The list has no USB port.
Ethernet ports
5
Multi-gig ports
0
Fastest WAN port
1Gbps
Fastest LAN port
1Gbps
USB ports
0
SFP+ port
No
Built-in modem
Not available
Modem standards
Not available

Mesh

Mesh technologies
AiMesh1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026AiMesh: Primary AiMesh Router and AiMesh Node.2Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800sRead 15 October 2026ASUS AiMesh builds a whole-home network from multiple ASUS routers, with a single SSID or several.
Units per pack
11Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Package Content lists one router.
Coverage of the pack (claimed)
Not available
Identical units
Not available
Satellite model
Not available
Satellite ports
Not available
Ethernet backhaul
Not available

Software

Management
Mobile app, Web interface3Owner's manualdlcdnets.asus.com/pub/ASUS/wireless/RT-AX1800S/E21251_RT-AX1800S_UM_WEB.pdfRead 15 October 2026Chapter 2: the router is set up in a web GUI at router.asus.com. Chapter 3: the quick start guide uses the ASUS Router app. Tom's Hardware used both.
Online account required
No3Owner's manualdlcdnets.asus.com/pub/ASUS/wireless/RT-AX1800S/E21251_RT-AX1800S_UM_WEB.pdfRead 15 October 2026Quick Internet Setup starts in the web GUI with the local admin login. It does not ask for an ASUS account.
Operating modes
Router, Access point, Mesh node, Repeater, Media bridge1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Operating Mode: Access Point, Media Bridge, Repeater, Router and AiMesh Node.3Owner's manualdlcdnets.asus.com/pub/ASUS/wireless/RT-AX1800S/E21251_RT-AX1800S_UM_WEB.pdfRead 15 October 2026Section 4.6.1: Wireless router mode (default), Access Point mode and Repeater mode. The tech spec page adds Media Bridge and AiMesh Node.
Network features
Guest network, IPTV, Dual WAN, QoS, Parental controls, Dynamic DNS1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Guest Network, Traffic Control (Bandwidth Limiter, Traditional QoS), Parental Control (Customized Internet Schedule), WAN (Dual WAN, DDNS) and LAN (IPTV). VLAN and IoT network are not listed, so they are not stored.
VPN server
IPsec, OpenVPN, PPTP1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026VPN Server IPSec, OpenVPN and PPTP. WireGuard is not listed.
VPN client
L2TP, OpenVPN, PPTP1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026VPN Client L2TP, OpenVPN and PPTP.
USB applications
Not available

Security

Wi-Fi security
WPA2-Personal, WPA3-Personal, WPA2-Enterprise1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Security: Open system, WPA/WPA2-Personal, WPA/WPA2-Enterprise and WPA3-Personal. A footnote says WPA/WPA2-Enterprise is not available under AiMesh.
Security service
AiProtection Classic1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026AiProtection: Malicious Site Blocking, Infected Device Prevention and Blocking, AiProtection Classic.
Security service cost
Free7Reviewtomshardware.com/reviews/asus-rt-ax1800s-routerRead 15 October 2026Trend Micro protection with Malicious Site Blocking and Infected Device Prevention and Blocking needs no subscription. The review's iPerf results (client with an Intel AX201, 6 ft and 25 ft, 5 GHz about 300 Mbps near and 250 Mbps far) are not stored, since measured throughput is Tom's Guide only.8Retailer pageamazon.com/dp/B09M9477NSRead 15 October 2026The listing title says Subscription-Free Network Security.
Automatic firmware updates
Not available
Security updates until
Not available

Smart home

Thread border router
Not available
Matter controller
Not available
Zigbee hub
Not available
Bluetooth
Not available
Smart home platforms
Amazon Alexa7Reviewtomshardware.com/reviews/asus-rt-ax1800s-routerRead 15 October 2026The features section names Alexa integration among the router's standard features.

Hardware

System on chip
MediaTek MT76216Spec databaseopenwrt.org/toh/asus/rt-ax54Read 15 October 2026OpenWrt Table of Hardware for the ASUS RT-AX54, which lists AX1800S as an alternate name: MediaTek MT7621, MIPS 1004Kc, 2 cores with 2 VPEs each (4 threads), 256 MB RAM and 128 MiB NAND. The RAM and flash agree with the ASUS spec page. ASUS prints no chip name. The RT-AX1800S V2 uses a different MediaTek platform, so this entry is the original board.
CPU cores
21Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Processor: Dual-core (4 VPE). OpenWrt's table lists the MT7621 as 2 cores with 2 VPEs each. The clock is not published here.
CPU clock
0.88GHz6Spec databaseopenwrt.org/toh/asus/rt-ax54Read 15 October 2026The table's CPU speed is 880 MHz, taken from the OpenWrt boot log. ASUS prints no clock.
RAM
256MB1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Memory: 128 MB Flash and 256 MB RAM. 256 MB is stored as 0.256 GB.
Flash storage
128MB1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Memory: 128 MB Flash. Stored as 0.128 GB.
Cooling fan
Not available

Power

Power supply
External DC adapter1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Power Supply: AC input 100V-240V and DC output 12 V with max 1.5A current. The router takes an external adapter.
Rated power input
12 V, 1.5 A1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Published as the adapter's DC output, 12 V with max 1.5 A. Stored as the router's DC input. The Asia quick start guide says the same.4Owner's manualdlcdnets.asus.com/pub/ASUS/wireless/RT-AX1800S/A18726_RT-AX1800S_Booklet_140x100mm_QSG_WEB.pdfRead 15 October 2026DC Power adapter: DC Output +12V with 1.5A current.
Included adapter output
18W1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 202612 V times 1.5 A is 18 W. The English manual prints max 1A/1.5A for its adapter note, and the model-specific Asia quick start guide prints 1.5A. A German retailer feed lists the adapter as 12V/1.5A/18W.
Power use (typical, claimed)
Not available
Power use (max, claimed)
Not available

Measured

We could not find any of these 6 fields. Show them
Wi-Fi throughput (measured)
Not available
Fastest Wi-Fi throughput (measured)
Not available
Wi-Fi throughput through a wall (measured)
Not available
Range (measured)
Not available
Power use under load (measured)
Not available
Energy use per day (measured)
Not available

Dimensions and weight

Front and side, drawn to scale.

Dimensions
Width230Height56Depth134mm(9.1 × 2.2 × 5.3 in)1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Product Dimensions 230 x 134 x 56 mm, printed without axis names. Tom's Hardware prints 9.06 x 5.28 x 2.20 in (230 x 134 x 56 mm) and says it does not count the antennas, and Amazon prints 9.06 in L x 5.28 in W x 2.2 in H. So 230 mm is the width, 134 mm the depth and 56 mm the height with the antennas not counted.
Dimensions with antennas
Not available
Weight
390g(13.8 oz)1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Product Weight 390 g. Tom's Hardware prints 0.82 lb and Amazon 13.12 oz, which are about 372 g. The maker's figure is used.
Wall mountable
Not available

Certifications

We could not find any of these 3 fields. Show them
Wi-Fi Alliance certification ID
Not available
FCC ID
Not available
Other certifications
Not available

In the box

In the box
RT-AX1800S, RJ45 cable, Power adapter, Quick Start Guide, Warranty card1Maker product pageasus.com/us/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/techspecRead 15 October 2026Package Content: RT-AX1800S, RJ45 x1, Adapter x1, QSG x1, Warranty Card x1.

Warranty

Manufacturer warranty (source market)
3years5Maker product pageasus.com/support/api/product.asmx/GetPDWarrantyRead 15 October 2026ASUS US support warranty text for the RT-AX1800S: the general warranty is 3 years, but it may vary depending on the place of purchase. US site.

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Sources

We read 8 sources for this router. The numbers match the markers in the sheet.

  1. Read 15 October 2026Backs 24 fields
  2. Read 15 October 2026Backs 7 fields
  3. Read 15 October 2026Backs 4 fields
  4. Read 15 October 2026Backs 2 fields
  5. Read 15 October 2026Backs 1 field
  6. Read 15 October 2026Backs 2 fields
  7. Read 15 October 2026Backs 3 fields
  8. Read 15 October 2026Backs 3 fields

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