My puppies are almost gone so my mac pro should be in my house by the end of the month. In the mean time, I have an ethernet question. Since the mac pro has to eithernet ports, can I use one for my broadband internet ( Verizon Fios-their connectin comes with a 4 port 10/100 and g- wireless) and the other with a gigabit switch for connecting to a gigabit NAS device without degrading the speed of the gigabit switch.