SEAGATE TECHNOLOGY, INC.
       Customer Technical Support FAX Network +1 408 438-8137
     Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
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� United States    +1 408 438-8771 �  United Kingdom +44 628 478011  �
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� Germany         +49  89 140-9331 �  Singapore      +65   227-2217  �
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                            (C)opyright 1991



ST-1090N (94351-090) Swift SCSI

     ����\
     � 0 �  5
     � 0 �  G
     � 0 �  G
     � 0 � 12  ....................  o o o o o o
     ����/     1...................  o o o o o o
     ��������������������������������������������
         1������� 1������� 1�������  1 2 4 � � �
           Terminator Resistors      ����� � � �
                                       �   � � �   Terminator Power Select
            Drive ID, binary - use �����   � � �   Header located on the side
             ID 0 (no jumpers) for �       � � �   ��������������������������
              single drive install �       � � �  (Back) A B (Front of drive)
            Enable Parity Checking ��������� � �         C D
         Enable Motor Start Option ����������� �      �������������P�W�A
              Synchronized Spindle �������������        �
                                                        �
              �������������������������������������������
             ���
             A-B      Drive from Power Connector (factory default)
             A-C      Drive from SCSI Bus
             A-C&B-D  Drive from Power Connector and Provide to SCSI Bus
             B-D      Only provide to SCSI Bus

                             ST-1090N
                          94351-90 Swift

       UNFORMATTED CAPACITY (MB) ________________90
       FORMATTED CAPACITY (29 SECTORS) (MB) _____79
       ACTUATOR TYPE ____________________________VOICE COIL
       TRACKS ___________________________________7,476
       CYLINDERS ________________________________1,068
       HEADS ____________________________________5
       DISCS ____________________________________3
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________RLL
       TRANSFER RATE (mbytes/sec) _______________1
       SPINDLE SPEED (RPM) ______________________3,600
       BUFFER ___________________________________32 or 64 Kbyte
         Read Look-Ahead, Non-Adaptive,
         Single-Segmented
       INTERFACE ________________________________SCSI
       TPI (TRACKS PER INCH) ____________________1,350
       BPI (BITS PER INCH) ______________________22,840
       AVERAGE ACCESS (ms) ______________________15
       SINGLE TRACK SEEK (ms) ___________________4
       MTBF (power-on hours) ____________________70,000
       POWER REQUIREMENTS: +12V START-UP (amps) _2.5
                           +12V TYPICAL (amps) __0.7
                           +5V START-UP (amps) __0.75
                           +5V TYPICAL (amps) ___0.4
                           TYPICAL (watts) ______11
                           MAXIMUM (watts) ______33.75
       BUFFERED STEP PULSE RATE (micro sec) _____6-200
       WRITE PRECOMP (cyl) ______________________N/A
       REDUCED WRITE CURRENT (cyl) ______________N/A
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________0 or NONE

Already low-level formatted at the factory.


                          Swift Remote LED Option

               Front View of Drive Without the Plastic Bezel

                                  �������Ŀ
                                  � A � B �    B = Anode
                                  �������Ĵ    D = Cathode
                                  � C � D �
              ...�������������������������������P�W�A���...


        � Default jumper at C-D for LED mounted on drive PWA
        � To use remote LED, remove jumper and extend B (Anode)
          and D (Cathode).
        � Swift LED kit 75912397 allows connection to a remote LED
        � Swift LED kit 95913369 has an LED for attachment to the
          system front bezel or a 5.25-inch frame kit

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