$ system_profiler SPUSBDataType .
USB 2.0 10/100M Ethernet Adaptor:
BSD Name: en3
Product ID: 0x9700
Vendor ID: 0x0fe6
Speed: Up to 12 Mb/sec
Location ID: 0xfa130000 / 6
Current Available (mA): 500
Current Required (mA): 120
I hope others can reach to this blog with the query above :)
So after digging the internet and have found nothing, I actually found the CD which came together with the USB adapter. I'm uploading the Mac folder from it here just in case you need it too.