Intel Rapid Storage is working?

Hi to all. I've bought an ASUS A551L-XO529H laptop with with 1TB of HDD + 24GB of SDD. I've installed the Intel Rapid Storage software (version 13.2.4.1000) but there is no accelerate button in the performance tab.

That's my disk setup:

I've a doubt: the SSD is formatted as OEM Partition. This setting is correct? Should not to be set "unallocated" instead?

Thanks in advance (and sorry for my english!)