Hi all. I have a mid 2010 lowest spec 27" iMac which has USB 2.0. I have just purchased but not yet received the new 27" iMac. I have some large files on my old computer...about 150GB which is mainly a aircraft simulator called x-plane 10. I want to transfer all of these files to my new machine. A couple of questions: 1. Is USB cable my only/best option? 2. Approximately how long will it take to complete the transfer? (note i do not have a separate DVD drive to hook up to my new machine) Separately, given the specs of my old machine...how can I use it as a second monitor effectively (ie it does not have thunderbolt)? I have read some posts on this subject but could not make sense of how to set up. Note not using bootcamp or anything like that. Is there a particular cable or something I can buy? Thanks in advance!!