Zyxel SBG3500-NB End-of-Life & EOSL Dates
Zyxel has published end-of-life dates for the SBG3500-NB. End of global marketing and end of service and support are taken from Zyxel's own end-of-life table, linked below.
Every tracked Zyxel SBG3500-NB SKU group is past Zyxel end of service life (last group Dec 2020). 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: SBG5500-B.
End of sale
Dec 2018
Last date of support
Dec 2020
Part numbers
1
71
months past last support
Why this score
- Past end of service life 71 months ago
- Vendor-published date, source-linked
- Vendor-named replacement / migration path available
- Category: service provider access equipment
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
This family has one tracked part number. Its dates are the ones above.
| Part number | End of sale | Last date of support | Status | Description |
|---|---|---|---|---|
| SBG3500-NB | Dec 2018 | Dec 2020 | Past support | service provider access equipment |
Options from here
The Zyxel SBG3500-NB 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. Current eBay listings for Zyxel SBG3500-NB ↗
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 SBG3500-NB questions
Is the Zyxel SBG3500-NB end of life?
Yes. The SBG3500-NB is past its last date of support (Dec 2020, per the Zyxel end-of-sale bulletin).
What is the last date of support for the SBG3500-NB?
Dec 2020, per the Zyxel end-of-sale bulletin.
Where do these SBG3500-NB 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 SBG3500-NB?
Zyxel's end-of-life bulletin lists SBG5500-B as the recommended migration path for the SBG3500-NB. Exact per-part-number replacements are in the linked bulletin.