2x SFF 8643 to 8644 SAS Adaptr Type: SAS Connector Number: 4 Connector Detail: 2 x SFF-8643 (36 pin; Internal HD Mini SAS) Receptacle x0A2 x SFF-8644 (36 pin; External HD Mini SAS) Receptacle Specifications: Supported Protocols: SATA and SAS x0ADimension: 0.90 x 4.70 x 2.90 x0AWeight: 4.30 oz.