I know a lot of people are getting new Imacs now, so I did a little digging, and emailed my Apple Guru..The fastes way to use MA is to T/Bolt the two iMacs. I'm going to give it a shot when mine comes..This is the reply I got: Hi Jeff, Thanks, and Happy New Year to you too! You can do MA via Thunderbolt, no problem. Hope this helps. I know you're excited to get the new iMac.