==============================================================================
                                MODEL  XT-4380S
==============================================================================

              Interface:  SCSI                 RLL 1,7 Encoding

Capacity, Unformatted                Capacity, Formatted SCSI Compatible

Per Drive (Mbytes)    :  384.46      Per Drive (Mbytes)    :  337.58
Per Surface (Mbytes)  :  25.63       Per Surface (Mbytes)  :  22.51
Per Track (Bytes)     :  20,940      Per Track (Bytes)     :  18,432
                                     Per Sector (Bytes)    :  512

Parameters                           Performance Specifications

Cylinders     :  1224                Transfer rate, Mbits/sec    :  10
Data Heads    :  15                  Access Time (Average)       :  18msec
Sector\Track  :  36                  Access Time (Track-To-Track):  3.0msec
Pre-Comp         NONE                Access Time (Maximum)       :  34.0msec
                                      
MTBF:  150,000 Hours (POH)            Dimensions(Inches): 3.25" x 5.75" x 8.20""

Power Requirements:  +12VDC +\- 5%. 1.5A Typical, 4.5A Maximum
                     + 5VDC +\- 5%. 1.7A Typical, 1.9A Maximum

NOTE:  This drive has been factory Low Level Formatted.  This is an intelligent
       device so No Drive type is required in your computer setup.
                                                                  

                         MAXTOR 4000S PCBA JUMPER OPTIONS
                         --------------------------------


SCSI ID SELECTION
-----------------


SCSI ID   PRIORITY   JP37(ID-2)   JP-36(ID-1)   JP35(ID-0)

0         LOWEST       OUT            OUT          OUT
1                      OUT            OUT          IN
2                      OUT            IN           OUT
3                      OUT            IN           IN
4                      IN             OUT          OUT
5                      IN             OUT          IN
6                      IN             IN           OUT
7         HIGHEST      IN             IN           IN  





DRIVE POWERUP OPTIONS
---------------------

     JP14                         JP38             
(SPIN WITH POWER)             (SPIN DELAY)           MODE             
-----------------             ------------           ----                     
   OUT                           OUT           START BY ID SEQUENCE
   OUT                           IN            WAIT FOR START COMMAND
   IN                         IN OR OUT        START WHEN POWER APPLIED



TERMINATOR POWER
----------------
JUMPER           STATUS         RESULT

JP41             IN             TERMINATOR POWER IS INTERNAL FROM DRIVE
JP34             IN             EXTERNAL FROM THE SCSI BUS
JP41 & JP34      IN             EXTERNAL & FROM THE DRIVE


WRITE PROTECT OPTION
--------------------

JP18 IS THE WRITE PROTECT JUMPER. WHEN "IN" THE DRIVE CANNOT BE WRITTEN ON.


PARITY OPTION
-------------

THE PARITY JUMPER IS JP40. "IN" ENABLES PARITY "OUT" DISABLES PARITY.

OTHER JUMPERS
-------------

OTHER JUMPERS ARE NOT USER SELECTABLE AND SHOULD NOT BE MODIFIED.



Revision A                                              Sandoval/Anderson
10/07/93


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