ST551 6Gbps PCIe B+M key to 2 Port SATA 3.0 Card M.2 to dual SATA Adapter

1.Meets PCI Express Base Specification
2.1- lane PCI Express for 2.5 and 5Ghz signaling
3.Two ports Serial ATA PHY for 1.5,3.0 and 6Gbps
4.PCI Express Base Specification Rev. 2.0
5.1-lane PCI Express for 2.5 and 5Ghz signaling
6.Maximum payload up to 128 bytes
7.Serial ATA AHCI spec,Rev.1.3
9.Serial ATA Data transfer rates up to 6Gbps
10.Downstream SATA II.SATA I
11.Support Gen 1m and Gen 2m SATA PHY
12.Support Native Command Queue (NCQ)