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       # UNIDENTIFIED
       
          J-403TG 486 GREEN VLB
       
          Processor    80486SX/CX486DX/80486DX/80486DX2/80486DX4         
          Processor    25/33/40/50(internal)/50/66(internal)MHz          
          Speed        
          Chip Set     OPTI                                              
          Max. Onboard 128MB                                             
          DRAM         
          Cache        64/128/256KB                                      
          BIOS         AMI/Award                                         
          Dimensions   330mm x 218mm                                     
          I/O Options  32-bit VESA local bus slots (3), green PC         
                       connector                                         
          NPU Options  None                                              
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | Reset switch     |    J1    | Power LED &       |    J6    |
          |                  |          | keylock           |          |
          |------------------+----------+-------------------+----------|
          | External battery |    J2    | Green PC          |   JP6    |
          |                  |          | connector         |          |
          |------------------+----------+-------------------+----------|
          | Speaker          |    J3    | Green PC          |   JP39   |
          |                  |          | connector         |          |
          |                  |          | (monitor)         |          |
          |------------------+----------+-------------------+----------|
          | Turbo switch     |    J4    | Green PC LED      |   JP41   |
          |------------------+----------+-------------------+----------|
          | Turbo LED        |    J5    | 32-bit VESA local |  SL1 -   |
          |                  |          | bus slots         |   SL3    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP1   |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | CMOS memory normal operation     |  JP2   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |  JP2   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP7   |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP12  |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP16  |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP19  |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP22  |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP26  |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP30  |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  U28   |    Open    |
          |   | alter                            |        |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |  Bank 0  |   Bank 1   |  Bank 2  |  Bank 3  |  JP5  |
          |------+----------+------------+----------+----------+-------|
          | 2MB  | (4) 256K |    NONE    |   NONE   | (1) 256K | 2 & 3 |
          |      |   x 9    |            |          |   x 36   |       |
          |------+----------+------------+----------+----------+-------|
          | 2MB  |   NONE   |    NONE    |   NONE   | (1) 512K | 1 & 2 |
          |      |          |            |          |   x 36   |       |
          |------+----------+------------+----------+----------+-------|
          | 4MB  | (4) 1M x |    NONE    |   NONE   |   NONE   | 2 & 3 |
          |      |    9     |            |          |          |       |
          |------+----------+------------+----------+----------+-------|
          | 4MB  |   NONE   |    NONE    |   NONE   | (1) 1M x | 1 & 2 |
          |      |          |            |          |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 4MB  | (4) 256K | (1) 256K x | (1) 256K | (1) 256K | 2 & 3 |
          |      |   x 9    |     36     |   x 36   |   x 36   |       |
          |------+----------+------------+----------+----------+-------|
          | 4MB  |   NONE   |    NONE    | (1) 512K | (1) 512K | 1 & 2 |
          |      |          |            |   x 36   |   x 36   |       |
          |------+----------+------------+----------+----------+-------|
          | 5MB  | (4) 256K |    NONE    |   NONE   | (1) 1M x | 2 & 3 |
          |      |   x 9    |            |          |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 6MB  | (4) 256K |    NONE    | (1) 1M x | (1) 256K | 2 & 3 |
          |      |   x 9    |            |    36    |   x 36   |       |
          |------+----------+------------+----------+----------+-------|
          | 6MB  |   NONE   |    NONE    | (1) 1M x | (1) 512K | 1 & 2 |
          |      |          |            |    36    |   x 36   |       |
          |------+----------+------------+----------+----------+-------|
          | 8MB  | (4) 1M x |    NONE    |   NONE   | (1) 1M x | 2 & 3 |
          |      |    9     |            |          |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 8MB  |   NONE   |    NONE    |   NONE   | (1) 2M x | 1 & 2 |
          |      |          |            |          |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 8MB  |   NONE   |    NONE    | (1) 1M x | (1) 1M x | 1 & 2 |
          |      |          |            |    36    |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 10MB | (4) 256K |    NONE    | (1) 2M x | (1) 256K | 2 & 3 |
          |      |   x 9    |            |    36    |   x 36   |       |
          |------+----------+------------+----------+----------+-------|
          | 10MB | (4) 256K |  (1) 1M x  | (1) 1M x | (1) 256K | 2 & 3 |
          |      |   x 9    |     36     |    36    |   x 36   |       |
          |------+----------+------------+----------+----------+-------|
          | 10MB |   NONE   |    NONE    | (1) 2M x | (1) 512K | 1 & 2 |
          |      |          |            |    36    |   x 36   |       |
          |------+----------+------------+----------+----------+-------|
          | 10MB |   NONE   |  (1) 1M x  | (1) 1M x | (1) 512K | 1 & 2 |
          |      |          |     36     |    36    |   x 36   |       |
          |------+----------+------------+----------+----------+-------|
          | 12MB | (4) 1M x |    NONE    | (1) 2M x |   NONE   | 2 & 3 |
          |      |    9     |            |    36    |          |       |
          |------+----------+------------+----------+----------+-------|
          | 12MB |   NONE   |  (1) 1M x  | (1) 1M x | (1) 1M x | 1 & 2 |
          |      |          |     36     |    36    |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 12MB | (4) 1M x |  (1) 1M x  | (1) 1M x |   NONE   | 2 & 3 |
          |      |    9     |     36     |    36    |          |       |
          |------+----------+------------+----------+----------+-------|
          | 16MB | (4) 4M x |    NONE    |   NONE   |   NONE   | 2 & 3 |
          |      |    9     |            |          |          |       |
          |------+----------+------------+----------+----------+-------|
          | 16MB |   NONE   |    NONE    |   NONE   | (1) 4M x | 1 & 2 |
          |      |          |            |          |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 16MB | (4) 1M x |  (1) 1M x  | (1) 1M x | (1) 1M x | 2 & 3 |
          |      |    9     |     36     |    36    |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 16MB |   NONE   |    NONE    | (1) 2M x | (1) 2M x | 1 & 2 |
          |      |          |            |    36    |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 17MB | (4) 256K |    NONE    |   NONE   | (1) 4M x | 2 & 3 |
          |      |   x 9    |            |          |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 20MB | (4) 1M x |    NONE    |   NONE   | (1) 4M x | 2 & 3 |
          |      |    9     |            |          |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 20MB | (4) 1M x |    NONE    | (1) 4M x |   NONE   | 2 & 3 |
          |      |    9     |            |    36    |          |       |
          |------+----------+------------+----------+----------+-------|
          | 20MB |   NONE   |    NONE    | (1) 4M x | (1) 1M x | 1 & 2 |
          |      |          |            |    36    |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 32MB | (4) 4M x |    NONE    |   NONE   | (1) 4M x | 2 & 3 |
          |      |    9     |            |          |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 32MB |   NONE   |    NONE    |   NONE   | (1) 8M x | 1 & 2 |
          |      |          |            |          |    36    |       |
          |------+----------+------------+----------+----------+-------|
          | 32MB | (4) 4M x |    NONE    | (1) 4M x |   NONE   | 2 & 3 |
          |      |    9     |            |    36    |          |       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM CONFIGURATION (CON’T)                 |
          |------------------------------------------------------------|
          | Size  |  Bank 0   |  Bank 1  |  Bank 2  |  Bank 3  |  JP5  |
          |-------+-----------+----------+----------+----------+-------|
          | 32MB  |   NONE    |   NONE   | (1) 4M x | (1) 4M x | 1 & 2 |
          |       |           |          |    36    |    36    |       |
          |-------+-----------+----------+----------+----------+-------|
          | 64MB  | (4) 16M x |   NONE   |   NONE   |   NONE   | 2 & 3 |
          |       |     9     |          |          |          |       |
          |-------+-----------+----------+----------+----------+-------|
          | 64MB  |   NONE    |   NONE   |   NONE   | (1) 16M  | 1 & 2 |
          |       |           |          |          |   x 36   |       |
          |-------+-----------+----------+----------+----------+-------|
          | 64MB  | (4) 4M x  | (1) 4M x | (1) 4M x | (1) 4M x | 2 & 3 |
          |       |     9     |    36    |    36    |    36    |       |
          |-------+-----------+----------+----------+----------+-------|
          | 64MB  |   NONE    |   NONE   | (1) 8M x | (1) 8M x | 1 & 2 |
          |       |           |          |    36    |    36    |       |
          |-------+-----------+----------+----------+----------+-------|
          | 128MB | (4) 16M x |   NONE   |   NONE   | (1) 16M  | 2 & 3 |
          |       |     9     |          |          |   x 36   |       |
          |-------+-----------+----------+----------+----------+-------|
          | 128MB |   NONE    |   NONE   |   NONE   | (1) 32M  | 1 & 2 |
          |       |           |          |          |   x 36   |       |
          |-------+-----------+----------+----------+----------+-------|
          | 128MB | (4) 16M x |   NONE   | (1) 16M  |   NONE   | 2 & 3 |
          |       |     9     |          |   x 36   |          |       |
          |-------+-----------+----------+----------+----------+-------|
          | 128MB |   NONE    |   NONE   | (1) 16M  | (1) 16M  | 1 & 2 |
          |       |           |          |   x 36   |   x 36   |       |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed positon.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      TAG      |
          |------------+---------------+---------------+---------------|
          |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |    Size    |        JP8        |    JP27     |    JP28     |
          |------------+-------------------+-------------+-------------|
          |    64KB    | pins 2 & 3 closed |    Open     |    Open     |
          |------------+-------------------+-------------+-------------|
          |   128KB    | pins 1 & 2 closed |   Closed    |    Open     |
          |------------+-------------------+-------------+-------------|
          |   256KB    | pins 2 & 3 closed |   Closed    |   Closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |    Type    |  JP9   |  JP10  |   JP11   |  JP13   |  JP15  |
          |------------+--------+--------+----------+---------+--------|
          |  80486SX   |  Open  |  Open  | pins 1 & |  Open   |  Open  |
          |            |        |        | 2 closed |         |        |
          |------------+--------+--------+----------+---------+--------|
          | SL80486SX  |  Open  | Closed | pins 1 & |  Open   |  Open  |
          |            |        |        | 2 closed |         |        |
          |------------+--------+--------+----------+---------+--------|
          |  CX486DX   | Closed |  Open  | pins 2 & | pins 1  | Closed |
          |            |        |        | 3 closed |   & 2   |        |
          |            |        |        |          | closed  |        |
          |------------+--------+--------+----------+---------+--------|
          |  80486DX   |  Open  |  Open  | pins 1 & | pins 1  |  Open  |
          |            |        |        | 2 closed |   & 2   |        |
          |            |        |        |          | closed  |        |
          |------------+--------+--------+----------+---------+--------|
          | SL80486DX  |  Open  | Closed | pins 1 & | pins 1  |  Open  |
          |            |        |        | 2 closed |   & 2   |        |
          |            |        |        |          | closed  |        |
          |------------+--------+--------+----------+---------+--------|
          |  80486DX2  |  Open  |  Open  | pins 1 & | pins 1  |  Open  |
          |            |        |        | 2 closed |   & 2   |        |
          |            |        |        |          | closed  |        |
          |------------+--------+--------+----------+---------+--------|
          | SL80486DX2 |  Open  | Closed | pins 1 & | pins 1  |  Open  |
          |            |        |        | 2 closed |   & 2   |        |
          |            |        |        |          | closed  |        |
          |------------+--------+--------+----------+---------+--------|
          |  80486DX4  |  Open  | Closed | pins 1 & | pins 1  |  Open  |
          |            |        |        | 2 closed |   & 2   |        |
          |            |        |        |          | closed  |        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |    Type    |  JP20  |  JP21  |   JP23   | JP32  |   JP40   |
          |------------+--------+--------+----------+-------+----------|
          |  80486SX   |  Open  |  Open  |  2 & 3   | Open  | 1 & 2, 3 |
          |            |        |        |          |       |   & 4    |
          |------------+--------+--------+----------+-------+----------|
          | SL80486SX  |  Open  |  Open  |  2 & 3   | Open  | 1 & 2, 3 |
          |            |        |        |          |       |   & 4    |
          |------------+--------+--------+----------+-------+----------|
          |  CX486DX   |  Open  |  Open  | 1 & 2, 3 | 1 & 2 | 1 & 2, 3 |
          |            |        |        |   & 4    |       |   & 4    |
          |------------+--------+--------+----------+-------+----------|
          |  80486DX   |  Open  |  Open  | 1 & 2, 3 | Open  | 1 & 2, 3 |
          |            |        |        |   & 4    |       |   & 4    |
          |------------+--------+--------+----------+-------+----------|
          | SL80486DX  | Closed | Closed | 1 & 2, 3 | Open  | 1 & 2, 3 |
          |            |        |        |   & 4    |       |   & 4    |
          |------------+--------+--------+----------+-------+----------|
          |  80486DX2  |  Open  |  Open  | 1 & 2, 3 | Open  | 1 & 2, 3 |
          |            |        |        |   & 4    |       |   & 4    |
          |------------+--------+--------+----------+-------+----------|
          | SL80486DX2 | Closed | Closed | 1 & 2, 3 | Open  | 1 & 2, 3 |
          |            |        |        |   & 4    |       |   & 4    |
          |------------+--------+--------+----------+-------+----------|
          |  80486DX4  | Closed | Closed | 1 & 2, 3 | 2 & 3 |  1 & 2   |
          |            |        |        |   & 4    |       |          |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |       Speed        |       JP17        |       JP18        |
          |--------------------+-------------------+-------------------|
          |       25MHz        |       Open        |       Open        |
          |--------------------+-------------------+-------------------|
          |       33MHz        |      Closed       |      Closed       |
          |--------------------+-------------------+-------------------|
          |       40MHz        |      Closed       |       Open        |
          |--------------------+-------------------+-------------------|
          |       50iMHz       |       Open        |       Open        |
          |--------------------+-------------------+-------------------|
          |       50MHz        |       Open        |      Closed       |
          |--------------------+-------------------+-------------------|
          |       66iMHz       |      Closed       |      Closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CPU VOLTAGE CONFIGURATION                  |
          |------------------------------------------------------------|
          |          Voltage           |             JP29              |
          |----------------------------+-------------------------------|
          |            3.3v            |   pins 3 & 5, 4 & 6 closed    |
          |----------------------------+-------------------------------|
          |            5.0v            |   pins 1 & 3, 2 & 4 closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               VESA WAIT STATE CONFIGURATION                |
          |------------------------------------------------------------|
          |          Wait states          |            JP35            |
          |-------------------------------+----------------------------|
          |         0 wait states         |            Open            |
          |-------------------------------+----------------------------|
          |         1 wait state          |           Closed           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BUS SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          | CPU speed |       JP31        |       JP33        |  JP37  |
          |-----------+-------------------+-------------------+--------|
          | <= 33MHz  | pins 1 & 2 closed | pins 2 & 3 closed |  Open  |
          |-----------+-------------------+-------------------+--------|
          |  > 33MHz  | pins 2 & 3 closed | pins 1 & 2 closed | Closed |
          +------------------------------------------------------------+