HP 9133 Disc Drive

The 9133 was a modular disc drive with an HP-IB interface. It included both a hard disc and a 3.5 inch floppy drive. The part number 9133 was used by HP over five years for combination drives which had very different performance characteristics and storage capacities. The 9133A and 9133B had the wider, 19 inch form factor. These drives had SS/DD capacity floppy drives (270KB). The 9133A had a 4.6MB hard disc and the 9133B had a 9.6MB hard disc.