April 25, 2026
USB soup, dongle drama
New 10 GbE USB adapters are cooler, smaller, cheaper
Tiny 10G dongles are here—cheap, cool, and stuck in USB chaos
TLDR: A new $80 10‑gig USB adapter promises desktop speeds in a pocket size, but only reaches full pace on rare 20 Gbps USB ports. Commenters love the price, roast the USB naming chaos, argue over Mac heat/driver quirks, and ask if power‑over‑Ethernet could make a one‑cable setup.
The internet’s losing it over Jeff Geerling’s test of a new $80 10‑gig USB adapter that’s smaller, cooler, and way cheaper than those brick‑sized Thunderbolt boxes. The catch? It only hits full speed on laptops with a rare 20 Gbps USB port. Cue the comment section riot. One user deadpans that many laptops “skipped” the needed port in favor of flashier USB4/Thunderbolt, while others pile on the long‑running joke that USB stands for “Usually Something Broken.” Windows calling every modern port “USB 3.0”? The crowd cackled. Apple misreporting the connection speed? Also roasted.
The optimists jumped in with upgrades: someone flagged a PCIe card for desktops and another hyped a new Framework 10G expansion card for the modular‑laptop faithful—“finally, a port that keeps it real,” quipped one reply. Heat drama sparked too: a 5G dongle ran “burning hot” on an older Mac but “cool” on a newer one, igniting a driver vs. hardware blame game. And then came the dreamers: could you power your laptop from the ethernet cable? A commenter invoked PoE++ (power‑over‑ethernet up to 100W), while replies reminded everyone you’d need special gear—this dongle won’t magically charge your Mac.
Bottom line: the dongle rocks on paper, but the real heat is the community meltdown over USB’s alphabet soup and which laptops actually deliver the promised speed.
Key Points
- •New Realtek RTL8159-based 10 GbE USB 3.2 adapters are smaller, cooler, and cheaper than older Thunderbolt 10G options.
- •An $80 WisdPi USB-C to 10 GbE adapter was tested across four systems; only a USB 3.2 Gen 2x2 (20 Gbps) port delivered near full 10 GbE throughput.
- •Other tested systems with USB 3.1 Gen 2x1 achieved roughly 6–7 Gbps; Macs showed symmetric bidirectional traffic, Framework did not.
- •On macOS, the adapter worked without extra drivers but misreported link speed as 2500Base-T; on Windows, a Realtek driver was required for connectivity.
- •A WisdPi 5G adapter reached 4.6 Gbps on an M4 MacBook Air; the 10G unit was ~1.4× faster but costs more than twice as much ($30 vs $80).