Have a 2014 and its great. But found a used 2009 on ebay cheap good shape. Want to run my dads old vectorworks 2008 which only supports snow leopard. I am too cheap to upgrade. I will up the ram and the rest later. But worried about the os for now. No os is installed. Will see on saturday when it arrives what I got. I think its a late 2009. But it definitely a 2009. Its got both mini dvi and mini display port. Earlier versions did not. So it must be 2009. Everymac dot com says late 2009 came with 10.6 and early 2009 cam with 10.5.6. But some sites say late 2009 came with 10.6.2 or 3. If its early I am good. But ifits late 2009 my retail snow disks might not work. Do I need to ebay the grey cds / dvds or will retail snow disks work?