Written 22 Aug 2026. Specs from the maker pages linked below. Prices from those stores. I haven't used these.
Buy paper you can call on a closet lot, not SmartNet you cannot transfer
On a closet lot you don't get Cisco SmartNet. You get a gray box and a firmware story. Buy new paper you can actually call.
Cisco SmartNet is a contract. It is not a transferable perk that rides along on a used Catalyst. Skip eBay “SmartNet included” listings. The replacements are a new TRENDnet or TP-Link with a published limited-lifetime policy in the US/Canada, or a new UniFi with UI Care sold on the same invoice.
TRENDnet TEG-S380: lifetime manufacturer protection, US/Canada only. Street $75–88. See the 2.5G myth post. TP-Link TL-SG108S-M2 Amazon copy says “Limited Lifetime Protection.” Street $55–80. UniFi Switch Ultra 60W: UI Care 5-year add-on $29/unit on the same store invoice. Switch $159 / $171 surcharge-incl. on the UI store 22 Aug 2026. Sibling note Ultra vs used Catalyst PoE.
TRENDnet TEG-3102WS (8× 2.5G + 2× 10G SFP+, web smart, fanless): official store $219.99. Amazon ASIN B0BPJZCQ5J. Existing 2.5G guide cited ~$200. Package contents list a 12 V / 1.5 A adapter. Some TRENDnet spec tables also print “max 152.3 W” and “internal power supply.” That 152.3 W line looks like a PoE-series leftover. Don't treat 152 W as closet draw. Believe the 12 V / 1.5 A brick in the box (18 W at the wall if you take the label literally). I haven't metered one.
What to buy
| Box | Paper | Street, 22 Aug 2026 | Buy if |
|---|---|---|---|
| TRENDnet TEG-S380 | Lifetime, US/Canada only. Fanless. Max 7.26 W. | $75–88 street. Maker list $87.99. | You want published lifetime on a new 8-port 2.5G. |
| TRENDnet TEG-3102WS | Lifetime*. Fanless. 12 V / 1.5 A brick in the package. Ignore the 152.3 W spec line. | Official $219.99. | VLANs plus two 10G SFP+ and you still want TRENDnet paper. |
| UniFi Switch Ultra 60W | UI Care 5-year, $29, same invoice. | $159 / $171 surcharge-incl., 22 Aug 2026 UI store. | You already live in UniFi. |
Skip
Skip used Catalyst + “SmartNet included.” That contract does not transfer because a listing said so. Skip Amazon Renewed as a substitute for manufacturer paper. Skip inventing an HPE Renew closet switch. There was no live closet CPO page on 22 Aug 2026. The heater test is still used vs new.
Sources
TRENDnet TEG-S380. TEG-3102WS store (package: 12 V 1.5 A; spec table also prints 152.3 W). Amazon TEG-3102WS. UI Ultra 60W. Cisco SmartNet is a contract, not a used-lot perk. Street moves.