SEDNA - PCI Express (PCIe) 2 Port SATA III 6.0 Gbps Host Adapter with Low Profile Bracket 1-Lane (x1) PCI-Express with transfer rate 5Gb/s Full Duplex channel Can be configured to 2x External e-SATA Ports ,2xInternal SATA Ports or 1 x Internal + 1 x External ( by jumper setting ) Compliant with Serial ATA 3.0 Specification the Data transfer rate up to 6.0Gb/s Backward compatible with SATA1.0/SATA2.0 specification Driver supported Windows98SE /ME/ 2000/XP/Server 2003/Vista/WIN7/8, Mac OS