This message was posted on behalf of Intel Corporation
Thank you for contacting Intel® technical support. I will be more than happy to help you.
I understand that you are having issues with the installation of a more recent release of Intel® Rapid Storage Technology.
I do apologize for the inconvenience, but it seems that the information in the README file has not been updated. However, the list of supported chipsets can be found in a INF from the driver itself.
According to the support information in the INF files, the version 18.104.22.1683 does not support the chipset in your system. I checked from that version and below until I found a version compatible with the Intel® C216 Chipset, but it was 22.214.171.1241, the very same version in your system.
In short, your system already has the latest version of Intel® Rapid Storage Technology compatible with the Intel® C216 Chipset.