Written 22 Aug 2026. Specs from the maker pages linked below. Prices from those stores. I haven't used these.
Buy the extra 10G cage only if one copy already fills the faster house port
Stay on a quiet faster-port switch until one file copy fills 2.5G (faster than normal house ethernet). Eight faster ports that all choke on a 2.5G hop to the file box is a common closet mistake.
Buy the extra 10G cage only if one copy already fills the faster house port (2.5G). The shipped 8-port deck already says this. This page is the SKU list behind that sentence. All-2.5G copper is the default. A 10G SFP+ cage is for a DAC to a file box (or a 10G router) when that one flow is the bottleneck. TEG-S562, QSW-2104-2S, TEG-3102WS, and SG3210X-M2 are fanless and have no PoE. QSW-2104-2S max draw is 12 W.
What to buy
| Box | What it is | Street, 22 Aug 2026 | Buy if |
|---|---|---|---|
| TP-Link TL-SG108S-M2 | 8× 2.5G, no SFP+, unmanaged, fanless | About $50–80. | No single flow is filling 2.5G. This is still the default. |
| TRENDnet TEG-S380 | 8× 2.5G, no SFP+, unmanaged, fanless | Maker $87.99. Street about $74–80. | Warranty paper over the TP-Link 8-port. |
| TRENDnet TEG-S562 | 4× 2.5G + 2× 10G SFP+, unmanaged, fanless | Amazon $51.99. | You need the DAC hop and you don't need eight copper or VLANs. |
| QNAP QSW-2104-2S-A-US | 4× 2.5G + 2× 10G SFP+, unmanaged, fanless, 12 W max | QNAP store $129, in stock. Amazon $116. B&H $79.99 (cut from $129.99). | You already own a QNAP SFP+ NAS and B&H is on the cut. Else see the TEG-S562 compare. |
| TRENDnet TEG-3102WS | 8× 2.5G + 2× 10G SFP+, managed, fanless | Amazon $169.98–$214.99. Newegg $199.99. | VLANs plus the DAC. Already in the 8-port table. |
| TP-Link SG3210X-M2 | 8× 2.5G + 2× 10G SFP+, Omada L2+, fanless | Amazon live. CA street $349.99. US buy-box not a single printed number this pass. | You grew Omada VLANs. Not the price win vs TEG-3102WS. |
| QNAP QSW-2104-2T-A-US | 4× 2.5G + 2× 10GBASE-T, unmanaged | B&H $149. | Copper 10G twin of the 2S. Footnote, not a second review. |
Skip
Skip a 10G cage "for later" if the NAS is 2.5G copper and nothing else speaks SFP+. Skip QSW-M2108-2C (fan + $349 and OOS / Newegg about $449). Skip QSW-1105-5T (chronically empty shelf). Skip SODOLA / HASIVO toys that print "10G SFP+" on a no-name ASIN.
Sources
Amazon TEG-S562. QNAP store QSW-2104-2S-A-US. B&H QSW-2104-2S. Amazon TEG-3102WS. Street ranges move. Check the live price before you click.