When John Atanasoff constructed the first semi-electronic digital computing device in 1939 he never could have imagined that over sixty years later, Belkin components would carry every SCSI cable imaginable. The single ended 50 Pin Header Pro Series SCSI Active internal terminator is used with internal SCSI cables with 50 Pin sockets. PRODUCT FEATURES: State-of-the-art wiring design ensures 100% compatibility; Gold plated copper contacts for a clean clear transmission; Active termination; Ground indents provide excellent conductivity and retention with mating connector.