Speccy indicates SATA-I on M2NPV-VM

I have Speccy running on my Asus M2NPV-VM which supposedly has SATA-II ports (Nvidia 430a Southbridge). But it says the disk is recognized only as SATA-I. Is this a bug? See the attached XML-file (hahaha, i wasn't allowed to upload a speccy file!)

With regards, Evert

M2NPV-VM.xml