I just put my mac to sleep and woke it up again - and both Ethernet interfaces are still operational at full speed. I haven't been able to test this in single mode yet but if I do this command at the terminal, it shows me the speed my current USB ethernet device is running at. en16 being the D-Link:
Code:
ifconfig en16 | grep media
this outputs the following:
Code:
media: autoselect (1000baseT <full-duplex>)
which means it currently runs at 1Gb/s. that makes sense since the device at the other end has a maximum speed of 1Gb/s