My friend has an iMac running OS X 10.6.8 and several programs say they will soon no longer be supported due to the age of the OS. I looked under About This Mac to see if it meets the minimum requirements to upgrade to El Capitan, but it does not show the year of the iMac. When I checked for El Capitan's requirements it said it has to be a Mid 2007 or later iMac. I can only see the specs which is an Intel Core 2 Duo with 4GM of RAM. Would anyone know if it will be upgradeable to El Capitan, and if not what the latest version of OS X I could update it to. Thank you.