Motherboard fails to recognize anything in SATA ports

[absens]

I'm using the Asus P6X58D Premium, for some reason it doesn't detect anything plugged into the standard SATA. But if I plug anything into the SATA 6Gb/s it recognizes it just fine. This is the same with hard drives or optical drives. Any ideas?

 

[WyomingKnott]

Are you familiar with BIOS? It may be as simple as needing to enable those ports.

A more obscure possibility: See if the drives are seen in the BIOS, but not seen in the OS. A good-chance possibility for this is that those ports are set to AHCI mode and the OS has the IDE mode drivers. That's an interesting issue that I went through with an existing XP install when I wanted to switch to AHCI mode so I could do hot-plugging.

Let us know what you see in the BIOS, and we can go on from there. Have you tried plugging the _same_ drive, with the _same_ cable, into both connections and seen it in one / not seen it in the other?