I'd like to install an SSD in place of the optical superdrive in my 2007 A1224 7.1 20" iMac. I just dont know how feasible that is, as my research has not drawn any conclusions. Option #1: It seems that the A1224 used a slower ATAPI (PATA?) connector for the Superdrive; and that if I were able to install a SATA SSD here, it might not be much faster than the regular hard drive, due to the older interface. Option #2: If I install the SSD where the main hard drive is, then I have to use an external hard drive. Changing the internal HD to an external configuration may also slow things down; which I do not want. Option #3: Insalling an SSD externally, via USB. I don't even know for sure if this option is possible, but if it is, is there also a slowdown here, where an externally installed SSD will be slower than internally installed? Or can an external SSD even be used as a boot drive with the OS installed on it, on the iMac? My question is: Which is the best and fastest option and what cables or adapters would I need to do the job on the 2007 a1224 20" iMac?