O.K., I know I'm beating a death horse but today I decided to finally experiment with RAID Controller on this mobo and yes, this controller is broke, sometimes the HDDs will appear and then just like that they disappear. But unfortunately I'm too lazy to get a new mobo and resinstall drivers and such. It sounds like they got a batch of bad NBs or something or they not coding the stuff right in the BIOS. Shame, shame.