Originally Posted by
Error 601
The FreeBSD gods will smite me for this blasphemy, but in my real-world experience the ubiquitous $10 RealTek USB Gigabit dongles work just fine.
The couple of USB 3 gigabit dongles I've got use ASIX rather than Realtek chips; no
relative endorsement there, but they are cheap enough, work reliably with Linux and Windows 7+.
Interestingly, there are 2.5GbE USB 3 NICs, which makes sense given that 3.0/3.1 Gen 1 goes to 5Gbps. Closer to $60 than $10, though, and I've no experience with whether they're reliable or not.