Thanks for the feedback! We are considering to expand the advertised list in next release. You know, the speed for USB networking adaptors not only related to MAC/PHY but also related to USB BUS speed. If you plug a USB Gagibit networking adaptor on USB3, you got 1000M, while if you plug it on USB2, you will get 100M+, as USB2 is on speed 480M.
I have noticed that the driver only advertises 1000/Full as supported. Is this normal?