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TP-Link Archer AX21

TP-LinkHome router

Archer AX21

Released December 2020.7Maker product pagetp-link.com/us/support/download/archer-ax21/v2Read 14 October 2026Support page for Archer AX21(US) V2 lists firmware 201203 published 2020-12-16, the first firmware on the page. The V5 hardware is later, with its first firmware 1.0.1 (build 2024-11-08) published 2025-01-06. The month is for the Archer AX21 model, not for V5. Last checked 14 October 2026.

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

45 of 90 fields known.

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At a glance

Ports

  • 5 RJ45

All specs

SourceCalculated

General

Series
Archer1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026
Model numbers
Archer AX21 V51Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026The page is for hardware version V5 (support page: Archer AX21(US) V5.6). The maker's US pages also carry V3 and V4. V3 has a USB 2.0 port, 12 V 2 A power and 260.2 x 135.0 x 38.6 mm, and is end of life. V4 lists 260.2 x 135.0 x 38.6 mm. This entry covers V5 only, the version Amazon sells.
GTIN / EAN
Not available
Announced
Not available
Status
Available1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026The V5 page has a Buy Now button and the support page lists firmware 1.1.2 built 2025-08-14. The maker's US end-of-sale list (V9) gives an end-of-sale notice date of 2026-08-18 and an end-of-sale date of 2027-02-14 for versions 4.6 and 5.6, so it is still sold.6Maker spec sheet (PDF)static.tp-link.com/upload/manual/2026/202609/20260921/US%20EOS_List_Home%20-%20V9.pdfRead 14 October 2026Archer AX21 versions 4.6 and 5.6 (US): end-of-sale notice 2026-08-18, end of sale 2027-02-14. Versions 1.20, 1.26, 2.0, 2.6 and 3.6 had end-of-sale dates from 2024-05-29 to 2024-11-30. Stored as available until the end-of-sale date passes.
Predecessor
Not available
Successor
Not available
Launch price (US)
Not available
Launch price (EU)
Not available
Markets
Not available
Colours
Black1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026The product photos show a black unit. The page gives no colour name.
Form factor
Router1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026Standalone router, compatible with TP-Link OneMesh extenders and EasyMesh.
Segment
Home1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026Listed under the maker's WiFi routers for homes.

Wi-Fi

Wi-Fi
Wi-Fi 61Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026Standards and protocols: Wi-Fi 6, IEEE 802.11ax/ac/n/a on 5 GHz and 802.11ax/n/b/g on 2.4 GHz.
Wi-Fi speed class
AX18001Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026WiFi Speeds: AX1800, 5 GHz 1201 Mbps and 2.4 GHz 574 Mbps (802.11ax).
Wi-Fi radios
BandWi-FiStreamsMax channel width (MHz)Max link rate (Mbps)
2.4 GHzWi-Fi 6240574
5 GHzWi-Fi 62801,201
Source1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026The overview shows Wi-Fi 6 2.4 GHz at 40 MHz, 2x2, 574 Mbps and Wi-Fi 6 5 GHz at 80 MHz, 2x2, 1201 Mbps. WiFi Capacity lists 4 streams in total.
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, Beamforming, Target Wake Time, Band steering1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026WiFi Capacity: OFDMA and Airtime Fairness. The overview lists Beamforming and Target Wake Time. Smart Connect is in the datasheet. MU-MIMO is not listed and is not stored.2Maker spec sheet (PDF)tp-link.com/us/document/107355Read 14 October 2026Smart Connect assigns each device to the best available band, stored as band_steering. Target Wake Time and OFDMA are listed in the highlights.
External antennas
41Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026WiFi Range: 4x Fixed High-Performance Antennas.
Internal antennas
Not available
Detachable antennas
No1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026The page calls the four antennas fixed.
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 pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026Ethernet Ports: 1x Gigabit WAN Port and 4x Gigabit LAN Ports. The V5 page lists 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
EasyMesh, TP-Link OneMesh1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026The overview says to add EasyMesh-compatible devices. The specifications list OneMesh as supported. The datasheet says it is compatible with EasyMesh but has no Wi-Fi EasyMesh certification.2Maker spec sheet (PDF)tp-link.com/us/document/107355Read 14 October 2026EasyMesh: Supported. The footnote says it is compatible with standardized EasyMesh but has not obtained the Wi-Fi EasyMesh certification.
Units per pack
11Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026One router is sold.
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 interface1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026Management Features: Tether App and Webpage.
Online account required
No3Owner's manualtp-link.com/us/document/47481Read 14 October 2026Archer AX21(US) V5.60 Quick Installation Guide: method two sets the router up in a web browser at tplinkwifi.net and asks only for a login password. The TP-Link ID is optional for more cloud service.
Operating modes
Router, Access point1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026Working Modes: Router Mode and Access Point Mode.
Network features
Guest network, IPTV, QoS, Parental controls, Dynamic DNS1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026Guest Network: 1x 5 GHz and 1x 2.4 GHz. IPTV lists IGMP Proxy, IGMP Snooping, Bridge and Tag VLAN, so VLAN is not stored. QoS by Device, DDNS (TP-Link, NO-IP, DynDNS) and Parental Controls (URL Filtering, Time Controls) are listed. The router has no paid service and the page names no subscription.2Maker spec sheet (PDF)tp-link.com/us/document/107355Read 14 October 2026Parental Controls: URL Filtering, Time Controls. Quality of Service: QoS by Device. Guest Network: 1x 5 GHz and 1x 2.4 GHz.
VPN server
OpenVPN, PPTP, L2TP, WireGuard2Maker spec sheet (PDF)tp-link.com/us/document/107355Read 14 October 2026VPN Server: OpenVPN, PPTP, L2TP, Wireguard VPN Server. The V5 product page lists only OpenVPN and PPTP servers. The datasheet is newer and is used, and the V5 firmware notes mention L2TP/IPSec VPN and a VPN kill switch.
VPN client
OpenVPN, PPTP, L2TP, WireGuard2Maker spec sheet (PDF)tp-link.com/us/document/107355Read 14 October 2026VPN Client: OpenVPN, PPTP, L2TP, Wireguard VPN Client. The V5 product page lists no VPN client row.
USB applications
Not available

Security

Wi-Fi security
WPA2-Personal, WPA3-Personal, WPA2-Enterprise1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026WiFi Encryption: WPA, WPA2, WPA3 and WPA/WPA2-Enterprise (802.1x).2Maker spec sheet (PDF)tp-link.com/us/document/107355Read 14 October 2026WiFi Encryption: WPA, WPA2, WPA3, WPA/WPA2-Enterprise (802.1x).
Security service
Not available
Security service cost
Not available
Automatic firmware updates
Yes1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026Cloud Service: Auto Firmware Upgrade and OTA Firmware Upgrade.2Maker spec sheet (PDF)tp-link.com/us/document/107355Read 14 October 2026Cloud Service: Auto Firmware Upgrade, TP-Link ID, DDNS.
Security updates until
Not available

Smart home

We could not find any of these 5 fields. Show them
Thread border router
Not available
Matter controller
Not available
Zigbee hub
Not available
Bluetooth
Not available
Smart home platforms
Not available

Hardware

We could not find any of these 6 fields. Show them
System on chip
Not available
CPU cores
Not available
CPU clock
Not available
RAM
Not available
Flash storage
Not available
Cooling fan
Not available

Power

Power supply
External DC adapter1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026The page lists a power adapter in the package.
Rated power input
12 V, 1.5 A1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026Power: 12 V, 1.5 A.
Included adapter output
18W1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 202612 V times 1.5 A is 18 W. Package Content lists a power adapter.
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
Width261.1Height41Depth134.5mm(10.3 × 1.6 × 5.3 in)1Maker product pagetp-link.com/us/home-networking/wifi-router/archer-ax21/v5Read 14 October 2026Dimensions (W x D x H): 10.3 x 5.3 x 1.6 in (261.1 x 134.5 x 41 mm). Stored as width, depth and height. The page does not say whether the antennas are folded.
Dimensions with antennas
Not available
Weight
Not available
Wall mountable
Yes3Owner's manualtp-link.com/us/document/47481Read 14 October 2026Q5 says to keep the antennas upright when the router is hanging on a wall. No bracket is named.

Certifications

Wi-Fi Alliance certification ID
Not available
FCC ID
Not available
Other certifications
FCC, CE, RoHS2Maker spec sheet (PDF)tp-link.com/us/document/107355Read 14 October 2026Certifications: FCC, CE, RoHS.

In the box

In the box
Wi-Fi Router Archer AX21, Power Adapter, RJ45 Ethernet Cable, Quick Installation Guide2Maker spec sheet (PDF)tp-link.com/us/document/107355Read 14 October 2026Package Contents: Wi-Fi Router Archer AX21, Power Adapter, RJ45 Ethernet Cable, Quick Installation Guide.

Warranty

Manufacturer warranty (source market)
2years5Maker product pagetp-link.com/us/support/replacement-warrantyRead 14 October 2026US warranty page: Wi-Fi routers bought on or after 2023-09-01 have a 2 year warranty.

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Sources

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

  1. Read 14 October 2026Backs 25 fields
  2. Maker spec sheet (PDF)tp-link.com/us/document/107355
    Read 14 October 2026Backs 10 fields
  3. Read 14 October 2026Backs 2 fields
  4. Read 14 October 2026Backs 1 field
  5. Read 14 October 2026Backs 1 field
  6. Read 14 October 2026Backs 1 field
  7. Read 14 October 2026Backs 1 field
  8. Read 14 October 2026Backs 1 field

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