Archer AX21 (v3)

Key dates

Release

December 2021 · estimate

How I calculated it: The first firmware TP-Link's US download page lists for this hardware version is Archer AX21(US)_V3_211130, published 2021-12-28 and marked as the first firmware released. Its month is used as the launch month; the model may have gone on sale shortly before.

Last update

September 25, 2024 · version 1.2.1 Build 20240809

End of support

No end date

Estimated end

November 2027 · estimate

The maker’s policy says security updates usually end 3 years after discontinuation.

Discontinued in the US

November 30, 2024

Source·TP-Link (opens in a new tab)·checked November 13, 2026

Firmware updates

Updates I found on the maker’s pages, from December 2021 to September 2024. I read the notes of 8 of these updates and found security changes in 4.

2024-09-25

1.2.1 Build 20240809 Security, new features or improvements

2023-06-26

230621 Security

2023-03-17

1.1.4 Security, new features or improvements

2022-12-26

1.1.2 New features or improvements

2022-12-02

1.1.3 Security, bug fixes, new features or improvements

Sources

• TP-Link (opens in a new tab) Support pagelast verified November 13, 2026
• TP-Link (opens in a new tab) End-of-sale listlast verified November 13, 2026
• TP-Link (opens in a new tab) Firmware downloadslast verified October 15, 2026
• Vulnerability data: vendor security bulletins, CISA Known Exploited Vulnerabilities catalog, NVD, FIRST EPSSas of November 13, 2026 · Data sources