I have a Late 2009 iMac that I also use as my PC's 2nd monitor. I use it and would like to update the hard drive to an SSD but then I was wondering if I can swap the mechanical drive for the Optical drive? I know people can change the optical drive to an SSD but I have read that the Sata speed is 1.5Gbps for the optical drive so would prefer the slower mechanical drive to be on the slower sata speed. On that note how can I tell if the sata speed of the optical drive will be 3Gbps or 1.5Gbps without reconnecting it all back up if I just swap the optical drive for an SSD if I cannot swap the optical drive for the mechanical hard drive. Hope someone can answer my question as I have not had any luck googling it.