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                         Miniscribe Disk Drive Specifications
                                        For
                                    Model: 9780S
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             FORM FACTOR                           5.25 inch FH
             INTERFACE                                     SCSI
             DATA ENCODING METHOD                       1,7 RLL
             DATA TRANSFER RATE (MByte/Sec)
                SUSTAINED                                  1.25
                BURST                                       4.0

             DISK DRIVE CHARACTERISTICS
                HEADS                                        15
                CYLINDERS                                  1661
                SECTORS/TRACK (512 Byte Sectors)             53
                UNFORMATTED BYTES/TRACK                  31,906
                RADIAL TRACK DENSITY (TPI)                1,495
                ROTATIONAL SPEED (RPM)                    3,600
                UNFORMATTED CAPACITY (MBytes)             794.9
                FORMATTED CAPACITY (MBytes)               676.1

             ACCESS TIMES (mSec)*
                SINGLE TRACK                                4.5
                AVERAGE OF ALL POSSIBLE SEEKS                17
                ONE-THIRD STROKE                             19
                MAXIMUM                                      37
             *(INCLUDES SETTLING)

             POWER REQUIREMENTS
                DISSIPATION (Watts)
                   TYPICAL                                 18.0
                   MAXIMUM                                 22.0
                CURRENT (Amps)
                   +5 V DC (+ or - 5%)                      0.6
                   +12 V DC (+ or - 5%)                     1.2
                   MAXIMUM STARTUP CURRENT                  4.0

             PHYSICAL DIMENSIONS
                HEIGHT (in)                                3.25
                WIDTH (in)                                 5.75
                DEPTH (in)                                    8
                WEIGHT (lbs)                                  6

             OPERATIVE ENVIRONMENTAL LIMITS
                MINIMUM TEMPERATURE (Centigrade)             10
                MAXIMUM TEMPERATURE (Centigrade)             50
                THERMAL GRADIENT (Degrees C/Hour)            10

             RELIABILITY
                MTBF (Hours)                             30,000
                MTTR (Minutes)                               30
                COMPONENT DESIGN LIFE (Years)                 5