On my supermicro (intel) mainboard, i have 6 sata connectors, but in the bios is see only 4 sata connections?
Where are those other 2?
this is because in compatible mode or enhanced mode with IDE support, only SATA ports #0 to #3 are enabled.
In enhanced mode with AHCI or RAID support, all SATA ports #0 to #5 are enabled.