Cisco SG350-52-K9 End of Life & End of Support
Cisco SG350-52 52-Port Gigabit Managed Switch
Past Last Date of Support (Oct 31, 2026)The SG350-52 was the higher-port-count sibling of the SG350-28, used as a small-business wiring-closet aggregation switch. It shares the same Cisco Business 350 (CBS350) migration path.
Cisco SG350-52-K9 lifecycle milestone dates
- End-of-Sale Date
- Oct 30, 2021
- Last Date of Support (LDoS)
- Oct 31, 2026
Dates per Cisco’s official End-of-Sale/End-of-Life bulletin. Verify against your support contract before acting.
Running past End-of-Sale or Last Date of Support means no new Cisco TAC, hardware replacement, or security fixes. Uniqcli, an authorized Cisco partner, scopes a like-for-like or better replacement, confirms TAA compliance, accepts the Government Purchase Card (GPC), and plans a low-risk cutover.
Prefer to keep it running? Cisco no longer sells SmartNet for this model. Extend support with third-party maintenance →
Not sure this is your exact unit? Look it up by serial number →
Related end-of-life Cisco products
Frequently asked questions
When is the Cisco SG350-52-K9 end of life?
Cisco announced End-of-Sale for the SG350-52-K9 effective Oct 30, 2021. The Last Date of Support (LDoS) is Oct 31, 2026, after which Cisco no longer provides support. It is past its last date of support.
What replaces the Cisco SG350-52-K9?
Cisco's recommended migration is the Cisco Business 350 Series Managed Switch (CBS350-48T-4G). Uniqcli, an authorized Cisco partner, can quote the replacement TAA-compliant and GPC-payable, and help plan the cutover.
Can I still get support for the SG350-52-K9?
Not from Cisco. The SG350-52-K9 passed its Last Date of Support (Oct 31, 2026), so Cisco TAC, hardware replacement, and SmartNet renewals are no longer available. Independent third-party maintenance can still cover the hardware itself, typically well below OEM renewal rates. Uniqcli can review your install base, confirm coverage, and quote extended support or a refresh side by side.