There is a new technology that works with Intel® Rapid Storage Technology that is named Intel® Smart Response Technology.
This technology allows any Solid-state drive to work as cache of a hard drive or even two hard drives working in RAID.
As far as I know the Intel® Smart Response Technology allows the “SSD caching” if you set an stand alone Solid-state drive with one or more hard drives, I don’t know if the setup you have would allow that, the Intel® Smart Response Technology needs that the chipset of the board is an “Z68”
In any case the people that provide the support for that are at:
Try asking there!
Given the SSDs you have, you don't really want or need the SSD caching feature enabled. It is meant to be used with a small capacity SSD and a large HDD, and while it works it is not as fast as having your OS installed on a SSD.