I just set up a new wireless router, and bought a usb - ethernet adapter from apple, which does work with MBPs, but is only for 10/100 connections, and one of the features of my new router is a 1000 (gigabit) connection. Does this mean that the adapter would not be worth using, and that i would get a faster connection plugging directly into the ethernet port. Is there a program that can test this for me? Thanks!