I have an early 2009 Mac mini which doesnt support AirDrop. I came across Drop Copy some time ago and have been using it since. It works perfectly. I can easily transfer files between my iPhone 5 and my 2009 Mac mini. On the Mac, its simply drag and drop onto the Drop Copy icon on the desktop. On the iPhone simply choose your file or picture from within the app.
Andre Benrubi about DropCopy mobile, v4.94