Editorial, 22 Aug 2026. Specs from maker pages and recent street reports. We have not burned these units in. Affiliate tags are not live.
QNAP QSW-2104-2S: unmanaged 2.5G with two 10G SFP+ for a NAS
Plug-and-play plus loop detect, not VLANs. For people who already own a QNAP (or any SFP+ NAS).
4× 2.5G + 2× 10G SFP+, unmanaged, fanless, 12 V / 1 A, 12 W max, Class B, 2-year warranty. We have not burned a unit in. Do not pad this with eight-port copper — that table is the closet roundup. Same recipe, usually cheaper: TEG-S562 vs QSW-2104-2S. When the cage is worth it: 2.5G vs a 10G uplink.
SKU QSW-2104-2S-A-US. QNAP store $129, in stock. Amazon $116 (B0BFC6QFRL). B&H $79.99 (was $129.99) — use B&H when that cut is live. Sibling QSW-2104-2T-A-US (2× 10GBASE-T + 4× 2.5G, B&H $149, Amazon B0974XNGJL) is the copper-10G footnote, not a second review.
The short list
| Box | What it is | Street, 22 Aug 2026 | Buy if |
|---|---|---|---|
| QNAP QSW-2104-2S-A-US | 4× 2.5G + 2× 10G SFP+, unmanaged, fanless, loop detect, 12 W max, 2-year | QNAP store $129, in stock. Amazon $116. B&H $79.99 (was $129.99). | You already own the NAS and you want the QNAP halo. Recheck B&H. |
| QNAP QSW-2104-2T-A-US | 4× 2.5G + 2× 10GBASE-T, unmanaged | B&H $149. | Copper 10G instead of DAC. Footnote only. |
Skip
Skip this at $129 when the TEG-S562 is $52 and you do not care about the badge. Skip QSW-M2108-2C (fan, $349 and OOS). Skip QSW-1105-5T (empty shelf). Skip no-name 4×2.5G + SFP+ toys.
Sources
QNAP store QSW-2104-2S-A-US. Amazon QSW-2104-2S. B&H QSW-2104-2S. QNAP hardware specs. Street ranges move. Check the live price before you click.