C211 (V2.6)

Key dates

Release

June 2023 · estimate

How I calculated it: The first firmware TP-Link's US download page lists for this hardware version (1.3.4 Build 230222, published 2023-06-09, marked there as the first firmware release) is used as the launch month; the model may have gone on sale shortly before.

Last update

September 23, 2026 · version 1.5.5 Build 260915

End of support

No end date

Estimated end

October 2029 · estimate

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

Discontinued in the US

October 20, 2026

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

Firmware updates

Updates I found on the maker’s pages, from June 2023 to September 2026. I read the notes of 14 of these updates and found security changes in 8.

2026-09-23

1.5.5 Build 260915 Security

2026-07-21

1.5.4 Build 260702 Security

2026-04-16

1.5.3 Build 260402 Security

2026-02-05

1.5.2 Build 251217 Security, new features or improvements

2025-12-17

1.5.1 Build 251023 Security, new features or improvements

Sources

• 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