Well, if they will hot-swap, and show an 'eject' item in the tray, they are AHCI - I wouldn't worry any further; gotta realize this is brand-spankin'-new hardware, and, more aptly, drivers - the ICHs, starting with the first RAIDable SATA ICH5R, have been hanging around, getting continuously 'tweaked, for like eight years now [:bilbat:6]