LSI Logic SAS3041E-R Raid 4PORT Sas Pcie 3GB/S Ir ROHS6 Data Transfer Rate - 3Gb/s per port External Connectors - 4 internal SATA x1 Bus Type - PCI-E - Integrated RAID 0, 1, 1E and 10E - 4-lane 2.5Gb/s PCI Express