@Kaffe Seems like you've gotten it figured out, but reading the manual is worth it because sometimes some of the SATA ports will be higher performance than others; that's the case on our motherboard, where some of them are apparently implemented over some kind of PCIe-to-SATA bridge that's built into the motherboard, and some of them are direct to the chipset. I think. We don't really know all the little details of computer architecture.