Get LSI 2000 or 3000 series SATA cards. Several manufacturers make them approximately to the reference spec. The drivers are in the Linux kernel. If they don't come flashed to the IT spec firmware (no RAID capabilities), do that, but the cheap ones usually do. The 4i models sometimes come with ordinary individual SATA connectors; the 8i will have one of two kinds of combo connectors that can accept cables that go to a backplace or breakout cables to ordinary SATA connectors.
