I am trying to find an external DVD drive to replace the Superdrive becuase I need a drive wth a physical eject button. I need this DVD drive to be recognized by my MacBook Air 2011 model, to which I can boot in order to use an imaging problem on the booting DVD to do partition backups. The problem is that the imaging software (Paragon) I am using assumes I can eject the disc physically, so that it often does not give any option to "soft" eject the disc. Can someone give me some recommendations of tested/compatible models of USB Writable DVD Drives? I have read a previous thread on this, but the explanation there was incomplete, and it is mentioned there that HP branded DVD drives may not be compatible. Help?