I read quite a bit about the Optibay and similar kits. I went with the MaxUpgrade kit because it included an external case for the Superdrive. The kit arrived today. It was disappointing to find ZERO documentation. If anyone who does not have a computer repair background buys one....beware. I have a 2010 Macbook Pro 15 inch 2.4 GHz Core I5. I have spent 20+ years building and repairing computers. I'm A+ certified as well as Dell certified on a number of models. Apple certified? Nah. Total install time was 35 minutes from first screw out to last screw in. I put an Intel X25-M 120 GB SSD in super drive spot and a Western Digital Black 7200 RPM 500GB hard drive in the normal spot. Everything went together fine except one of the three screws that was to hold down the PCB for the SATA connection couldn't be used as a ribbon cable is routed over it. No big deal. I had previously installed Max OS X and Win 7 on the SSD. Very snappy. The external case for the super drive is nice. Worth the couple of extra bucks over the Optibay solution. The kit would be perfect if it had instructions......without it's just really good.