************************************************************
                         Miniscribe Disk Drive Specifications
                                        For
                                    Model: 8450A
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             FORM FACTOR                            3.5 inch HH
             INTERFACE                               16 BIT IDE
             DATA ENCODING METHOD                       2,7 RLL
             DATA TRANSFER RATE (Mbit/Sec)                  8.0

             DISK DRIVE CHARACTERISTICS
                HEADS                                         4
                CYLINDERS                                   745
                SECTORS/TRACK (512 Byte Sectors)             28
                WRITE PRECOMPENSATION CYLINDER            NA***
                REDUCED WRITE CURRENT CYLINDER            NA***
                MINIMUM STEP PULSE RATE                   NA***
                UNFORMATTED BYTES/TRACK                  16,666
                RADIAL TRACK DENSITY (TPI)                  898
                ROTATIONAL SPEED (RPM)                    3,600
                UNFORMATTED CAPACITY (MBytes)              49.7
                FORMATTED CAPACITY (Millions of Bytes)     42.7
                FORMATTED CAP. (MB = 1,048,576 Bytes)      40.7
                NA*** (NOT APPLICABLE TO IDE DRIVES)

             ACCESS TIMES (mSec)*
                SINGLE TRACK                                 12
                AVERAGE OF ALL POSSIBLE SEEKS                40
                MAXIMUM                                      90
             *(INCLUDES SETTLING)

             POWER REQUIREMENTS
                DISSIPATION (Watts)
                   TYPICAL                                 12.0
                CURRENT (Amps)
                   +5 V DC (+ or - 5%)                     0.55
                   +12 V DC (+ or - 5%)                    0.75
                   MAXIMUM STARTUP CURRENT                  2.4

             PHYSICAL DIMENSIONS
                HEIGHT (in)                               1.625
                WIDTH (in)                                    4
                DEPTH (in)                                 5.75
                WEIGHT (lbs)                               1.63

             OPERATIVE ENVIRONMENTAL LIMITS
                MINIMUM TEMPERATURE (Centigrade)              4
                MAXIMUM TEMPERATURE (Centigrade)             50
                THERMAL GRADIENT (Degrees C/Hour)            10

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