Zyxel NSG300 — End-of-Life & EOSL Dates
Zyxel has published end-of-life dates for the NSG300 on its business end-of-life list. End of Sale and End of Life are taken from Zyxel's own end-of-life data, linked below. Zyxel defines End of Life as the date all support services for the hardware and its firmware cease.
Every tracked Zyxel NSG300 SKU group is past Zyxel end of service life (last group Sep 2023). Units in production should be treated as unsupported. For past-EOSL units, weigh third-party maintenance, spares, replacement, or a documented run-to-failure. Zyxel’s named migration path: USG FLEX 700.
End of sale
Sep 2021
Last date of support
Sep 2023
Part numbers
1
36
months past last support
Why this score
- Past end of service life — 36 months ago
- Vendor-published date, source-linked
- Vendor-named replacement / migration path available
- Category: firewall
Support-lifecycle timing and source confidence only. Higher means more runway. It is not a risk, safety or compliance rating. How it is calculated
Part number in this family
All 1 share the dates above. Find your exact part to confirm.
| Part number | Description | End of sale | Last support | Status |
|---|---|---|---|---|
| NSG300 | firewall | Sep 2021 | Sep 2023 | Past support |
Options from here
The Zyxel NSG300 is past Zyxel end of service life. These are the paths teams take from here:
Keep it in production past the OEM cutoff with an independent maintainer.
Buy spares now, while units still circulate on the secondary market.
It is unsupported today. Set a migration timeline and budget.
Low-criticality role: document the risk, harden backups, retire on your terms.
Independent and informational. EOSL.ai sells no hardware and no maintenance, and lists no paid placements. Third-party maintenance keeps unsupported gear in production past the OEM cutoff; whether it fits depends on the role the asset plays.
Zyxel NSG300 — questions
Is the Zyxel NSG300 end of life?
Yes. Every tracked NSG300 SKU group is past its last date of support.
What is the last date of support for the NSG300?
Sep 2023, per the Zyxel end-of-sale bulletin.
Where do these NSG300 dates come from?
Every end-of-sale and end-of-service-life date on this page links to the official Zyxel end-of-sale bulletin it was taken from.
What is the replacement for the NSG300?
Zyxel's end-of-life bulletin lists USG FLEX 700 as the recommended migration path for the NSG300. Exact per-part-number replacements are in the linked bulletin.
On the same timetable
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