So, basically i bought a samsung 840 pro for my mac pro 5.1. All i wanted was to reduce a little the bottleneck of the sata2 using a pci-express to ssd adapter (not an apricorn, just a simple 1x slot). The guy who sold it me was like "yeah, these cards are made basically for mac pros users", and as i installed it's not recognised. Not seen as an HD, so no way to boot from it. I tried using 3 different OSs: 10.6, 10.6.8, 10.8.5; same results. I saw Marvell hasn't any kind of driver for mac, so i wanna know if there's a way to make this adapter work. Because i saw more than one person selling my same adapter as a "boot from mac working" adapter. It mounts a Marvell 88SE9130, what i see from the system profiler is this: Sorry if there was a similar thread, i made some research but didn't look like there was any.