2 x internal sata iii ports 1 x internal parallel ata port supports up to udma 6 transfer mode ata and atapi chipset marvell 88se9128 up to 4 devices connectable in total compliant with pci experss specification v20 and backward compatible with pci express 1x compliant with serial ata specification 30 supports communication speeds of 6gbps 3gbps and 15gbps supports raid levels 0 and 1 only for sata hard drives installable in any available pci express slot with different lane