Internal Mini SAS SFF-8644 to (4) 29pin SFF-8482 connectors with IDE Power High-speed data storage interface max up to 6Gbps (actual Data transfer speed is determined by the capabilities of the connected hardware) Mini SAS (SFF-8644) connect to the controller, 4 SAS connect to the HDD (Hard Disc Driver) SFF-8644 to 4 x SFF-8482 compliant with SAS 3.0 Length: 1-Meter / 3.3 Feet, 2 Packs