The I3529-xMCT is a shielded cable with an internal HD Mini SAS (SFF-8643) on one end, and 4 x low profile 29 Pin SAS drive connectors (SFF-8482) on the other, including DC power connectors for each drive. Connector 1 Internal HD Mini SAS SFF-8643 Connector 2 29 Pin SAS SFF-8482 x 4