Hello, I'm new to Mac's and I am just curious if you all could settle my problem. My roommate and I just recently got the internet, and will be getting a wireless router soon. Our problem how ever is that the cable box given to us only has one ethernet port, so we have to pass the ethernet cable back and forth to each other. We have a lot of problems doing this however. It is not plug in the cable and the Mac recognizes it. When we do try to connect we have to go unplug the router and then run the system preferences diagnostics. Eventually that works it out. So is there an easier way that having to restart the cable box router (i think that's what it is) and running the diagnostic app?