SEAGATE TECHNOLOGY, INC.
Technical Support Bulletin Board
408/438-8771  [300-9600 HST, MNP 3/5, N-8-1]
(C)opyright  1990                           

ST-4051

                                                          /4321\
                                                           O O O O  Power
                                                          
 Data Cable                                        1       5 G G 12
                       
              o o o o o o o o    1     Controller Cable
              o o o o o o o o    
Drive Select->1 2 3 4         Resistor Termination Pack
                          
                         
                       
                       
                        Radial
                       Recovery Mode
                      Write Fault
                     Not Connected
                   Never Used (Drive Select 3 and 4)
                 If twisted cable, use Drive Select 2

                              ST - 4051

       UNFORMATTED CAPACITY (MB) ________________50.88
       FORMATTED CAPACITY (17 SECTORS) (MB) _____42.52
       ACTUATOR TYPE ____________________________VOICE COIL
       TRACKS ___________________________________4,885
       CYLINDERS ________________________________977
       HEADS ____________________________________5
       DISCS ____________________________________3
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________MFM
       TRANSFER RATE (mbits/sec) ________________5.0
       INTERFACE ________________________________ST412
       TPI (TRACKS PER INCH) ____________________960
       BPI (BITS PER INCH) ______________________9,720
       AVERAGE ACCESS (ms) ______________________40
       SINGLE TRACK SEEK (ms) ___________________8
       MTBF (power-on hours) ____________________15,000
       POWER REQUIREMENTS: +12V START-UP (amps) _4.0
                           +12V TYPICAL (amps) __1.5
                           +5V TYPICAL (amps) ___1.5
                           TYPICAL (watts) ______25.5
                           MAXIMUM (watts) ______55
       BUFFERED STEP PULSE RATE (micro sec) _____10-70
       WRITE PRECOMP (cyl) ______________________N/A (978)
       REDUCED WRITE CURRENT (cyl) ______________N/A (978)
       LANDING ZONE (cyl)________________________AUTO PARK
       IBM AT DRIVE TYPE ________________________11 or 17*

 * MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING 
   AND PARTITIONING SOFTWARE.  ALSO, CHECK TO SEE IF YOUR CMOS SETUP 
   HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE.

Seagate reserves the right to change, without notice, product
offerings or specifications. (6/26/90)
