Thanks for contacting us today. I am sorry you could not find the correct parts for your system using the memory advisor tool. I was able to find the correct upgrades for your system. A link to these can be found below:
However, CT509182 is identical to CT2KIT12864AA667. The CT509182 part number is only the part number we use to guarantee compatability with your system. Please let us know if you have any other questions or concerns.