Please note the same subject was already posted in the the following thread: http://communities.intel.com/thread/41605
The new version of Intel® Rapid Storage Technology changed the way the Intel® drive is detected in device manager. However, this is not an issue with the Intel® SSD Toolbox specifically.
Since the way the drive is detected changed in device manager, the SATA controller is not able to translate the TRIM command to the drive. For issues related to Intel® Rapid Storage Technology we recommend reporting the issue to the Intel® Chipset Support Communities.