Ports (total) 4x internal Internal ports (SATA) 4 Internal ports (SAS) 4 Internal ports (NVMe) 0 Scalability (SAS/SATA) 256 SAS/SATA Bus PCIe 3.0 x8 Technology SAS-3 (12Gb/s) internal connectors 4x SFF-8643 external connectors - MTBF 1.4 Mio h