The empeg doesn't support USB2.0 or fast Ethernet. You're limited to a theoretical maximum of 12MBit/s with the USB port and 10MBit/s with the Ethernet. The overheads with USB are much greater however so you should still definately get a better transfer rate with Ethernet.

No idea how you'd force the empeg to full or half duplex though. I've just had a quick poke through the SMC 9194 Tifon driver and it doesn't even mention anything about full or half duplex.

You may just have an incompatible hub/switch unfortunately. Some other people have reported that the empeg just doesn't like certain models/brands and would refuse to work properly.

- Trevor