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       # ZENITH DATA SYSTEMS, INC.
       
          Z-SERVER EL PRO
       
          Device Type      Mainboard                                     
          Processor        Pentium Pro                                   
          Processor Speed  150/166/180/200MHz                            
          Chip Set         Intel 440FX                                   
          Video Chip Set   S3                                            
          Maximum Onboard  256MB                                         
          Memory           
          Maximum Video    2MB                                           
          Memory           
          Cache            256KB (located on the Pentium Pro CPU)        
          BIOS             Unidentified                                  
          Dimensions       305mm x 244mm                                 
          I/O Options      IDE interfaces (2), parallel port, PS/2 mouse 
                           port, serial ports (2), VGA feature           
                           connector, VGA port, riser slot, USB          
                           connectors (2), line out, microphone in,      
                           audio in – CD-ROM                             
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          |  Location   | Purpose        | Location |
          |------------------+-------------+----------------+----------|
          | VGA feature      |    J1K1     | PS/2 mouse     |   J5N2   |
          | connector        |             | port           |          |
          |------------------+-------------+----------------+----------|
          | VGA port         |    J1N1     | Parallel port  |   J7N1   |
          |------------------+-------------+----------------+----------|
          | IR connector     | J2A1/pins 8 | IDE interface  |   J8H1   |
          |                  |    - 11     | 2              |          |
          |------------------+-------------+----------------+----------|
          | IDE interface    |  J2A1/pins  | Floppy drive   |   J8L1   |
          | LED              |   15 & 16   | interface      |          |
          |------------------+-------------+----------------+----------|
          | Reset switch     |  J2A1/pins  | Microphone in  |   J8N1   |
          |                  |   23 & 24   |                |          |
          |------------------+-------------+----------------+----------|
          | Keylock          |    J3A1     | Soft off power |   J9F1   |
          |                  |             | supply         |          |
          |------------------+-------------+----------------+----------|
          | Serial port 2    |    J3N1     | IDE interface  |   J9H2   |
          |                  |             | 1              |          |
          |------------------+-------------+----------------+----------|
          | Serial port 1    |    J3N2     | Audio in –     |   J9N1   |
          |                  |             | CD-ROM         |          |
          |------------------+-------------+----------------+----------|
          | Chassis fan      |    J4A1     | Line out       |   J9N2   |
          | power            |             |                |          |
          |------------------+-------------+----------------+----------|
          | USB connector 1  |    J4N1     | Riser slot     |   SL1    |
          |------------------+-------------+----------------+----------|
          | USB connector 2  |    J4N1A    |                |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |             Function              | Label |    Position    |
          |-----------------------------------+-------+----------------|
          | » | Flash write protect disabled  | J4L2D |   Pins 5 & 6   |
          |   |                               |       |     closed     |
          |---+-------------------------------+-------+----------------|
          |   | Flash write protect enabled   | J4L2D |   Pins 4 & 5   |
          |   |                               |       |     closed     |
          |---+-------------------------------+-------+----------------|
          | » | Flash recover enabled         | J4L2E |   Pins 1 & 2   |
          |   |                               |       |     closed     |
          |---+-------------------------------+-------+----------------|
          |   | Flash recover disabled        | J4L2E |   Pins 2 & 3   |
          |   |                               |       |     closed     |
          |---+-------------------------------+-------+----------------|
          | » | CMOS memory normal operation  | J4L2E |   Pins 5 & 6   |
          |   |                               |       |     closed     |
          |---+-------------------------------+-------+----------------|
          |   | CMOS memory clear             | J4L2E |   Pins 4 & 5   |
          |   |                               |       |     closed     |
          |---+-------------------------------+-------+----------------|
          | » | Password memory normal        | J4L2F |   Pins 1 & 2   |
          |   | operation                     |       |     closed     |
          |---+-------------------------------+-------+----------------|
          |   | Password memory clear         | J4L2F |   Pins 2 & 3   |
          |   |                               |       |     closed     |
          |---+-------------------------------+-------+----------------|
          | » | Setup enabled                 | J4L2F |   Pins 5 & 6   |
          |   |                               |       |     closed     |
          |---+-------------------------------+-------+----------------|
          |   | Setup disabled                | J4L2F |   Pins 4 & 5   |
          |   |                               |       |     closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     SIMM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       8MB        |    (2) 1M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 2M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       24MB       |    (2) 2M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 4M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       40MB       |    (2) 4M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       48MB       |    (2) 4M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 8M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 4M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       72MB       |    (2) 8M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       80MB       |    (2) 8M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       96MB       |    (2) 8M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
          |------------------+--------------------+--------------------|
          |      128MB       |    (2) 16M x 36    |        None        |
          |------------------+--------------------+--------------------|
          |      136MB       |    (2) 16M x 36    |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |      144MB       |    (2) 16M x 36    |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |      160MB       |    (2) 16M x 36    |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |      192MB       |    (2) 16M x 36    |    (2) 8M x 36     |
          |------------------+--------------------+--------------------|
          |      256MB       |    (2) 16M x 36    |    (2) 16M x 36    |
          |------------------------------------------------------------|
          | Note: Board accepts EDO memory.                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CPU SPEED SELECTION                     |
          |------------------------------------------------------------|
          | CPU speed | Clock speed | Multiplier |  J4L2A   |  J4L2B   |
          |-----------+-------------+------------+----------+----------|
          |  150MHz   |    60MHz    |    2.5x    |  1 & 2   |  4 & 5   |
          |-----------+-------------+------------+----------+----------|
          |  166MHz   |    66MHz    |    2.5x    |  1 & 2   |  4 & 5   |
          |-----------+-------------+------------+----------+----------|
          |  180MHz   |    60MHz    |     3x     |  2 & 3   |  5 & 6   |
          |-----------+-------------+------------+----------+----------|
          |  200MHz   |    66MHz    |     3x     |  2 & 3   |  5 & 6   |
          +------------------------------------------------------------+