Comment by kalleboo

It will depends on your USB ports.

I use 2.5 GbE USB adapters and they work great... as long as they're in the right port.

Half of the ports on my Thunderbolt dock are provided by a shaky ASMedia USB chipset and it drops or lags after an hour or so. The other half of the ports use a more solid Fresco Logic chipset and I left an iperf + ping running overnight and it was a solid 2.3 Gbit 0.x ms the whole time. The built-in Apple ports are also solid.