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       # NIAGARA SMD TECHNOLOGY, INC.
       
          NT924
       
          Processor        Pentium                                       
          Processor Speed  75/90/100/120/133/150/166MHz                  
          Chip Set         Intel                                         
          Maximum Onboard  128MB (EDO DRAM supported)                    
          Memory           
          Cache            256/512KB                                     
          BIOS             Award/Phoenix                                 
          Dimensions       330mm x 218mm                                 
          I/O Options      32-bit PCI slots (4), floppy drive interface, 
                           green PC connector, IDE interfaces (2),       
                           parallel port, PS/2 mouse interface, serial   
                           ports (2), VRM connector, cache slot          
          NPU Options      None                                          
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |      Function       | Label |      Function       | Label  |
          |---------------------+-------+---------------------+--------|
          | IDE interface 1     | IDE1  | PS/2 mouse          |  J10   |
          |                     |       | interface           |        |
          |---------------------+-------+---------------------+--------|
          | IDE interface 2     | IDE2  | Floppy drive        |  J11   |
          |                     |       | interface           |        |
          |---------------------+-------+---------------------+--------|
          | Power LED & keylock |  J1   | Serial port 1       |  J13   |
          |---------------------+-------+---------------------+--------|
          | Speaker             |  J2   | Serial port 2       |  J14   |
          |---------------------+-------+---------------------+--------|
          | Reset switch        |  J3   | Parallel port       |  J15   |
          |---------------------+-------+---------------------+--------|
          | Turbo switch        |  J4   | IDE interface LED   |  JP5   |
          |---------------------+-------+---------------------+--------|
          | Turbo LED           |  J5   | 32-bit PCI slots    | PC1 -  |
          |                     |       |                     |  PC4   |
          |---------------------+-------+---------------------+--------|
          | Green PC LED        |  J6   | VRM connector       |  VRM   |
          |---------------------+-------+---------------------+--------|
          | Chassis fan power   |  J7   | Cache slot          |  SL1   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |                Setting                | Label |  Position  |
          |---------------------------------------+-------+------------|
          | » | On board I/O enabled              |  J24  |    Open    |
          |---+-----------------------------------+-------+------------|
          |   | On board I/O disabled             |  J24  |   Closed   |
          |---+-----------------------------------+-------+------------|
          | » | IDE interface 1 IRQ select IRQ14  |  JP2  | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | IDE interface 1 IRQ select none   |  JP2  | Pins 2 & 3 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | IDE interface 2 IRQ select IRQ15  |  JP3  | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | IDE interface 2 IRQ select none   |  JP3  | Pins 2 & 3 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | Flash BIOS voltage select 5v      |  JP6  | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | Flash BIOS voltage select 12v     |  JP6  | Pins 2 & 3 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | Jumper information unavailable    | JP13  |    N/A     |
          |---+-----------------------------------+-------+------------|
          | » | Jumper information unavailable    | JP14  |    N/A     |
          |---+-----------------------------------+-------+------------|
          | » | Keyboard clock speed select 8MHz  | JP15  | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | Keyboard clock speed select 12MHz | JP15  | Pins 2 & 3 |
          |   |                                   |       |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                            DRAM                            |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       8MB        |    (2) 1M x 32     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 2M x 32     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 1M x 32     |    (2) 1M x 32     |
          |------------------+--------------------+--------------------|
          |       24MB       |    (2) 2M x 32     |    (2) 1M x 32     |
          |------------------+--------------------+--------------------|
          |       24MB       |    (2) 1M x 32     |    (2) 2M x 32     |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 4M x 32     |        None        |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 2M x 32     |    (2) 2M x 32     |
          |------------------+--------------------+--------------------|
          |       40MB       |    (2) 4M x 32     |    (2) 1M x 32     |
          |------------------+--------------------+--------------------|
          |       40MB       |    (2) 1M x 32     |    (2) 4M x 32     |
          |------------------+--------------------+--------------------|
          |       48MB       |    (2) 4M x 32     |    (2) 2M x 32     |
          |------------------+--------------------+--------------------|
          |       48MB       |    (2) 2M x 32     |    (2) 4M x 32     |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 8M x 32     |        None        |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 4M x 32     |    (2) 4M x 32     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        DRAM (CON’T)                        |
          |------------------------------------------------------------|
          |     Size      |        Bank 0         |       Bank 1       |
          |---------------+-----------------------+--------------------|
          |     72MB      |      (2) 8M x 32      |    (2) 1M x 32     |
          |---------------+-----------------------+--------------------|
          |     72MB      |      (2) 1M x 32      |    (2) 8M x 32     |
          |---------------+-----------------------+--------------------|
          |     80MB      |      (2) 8M x 32      |    (2) 2M x 32     |
          |---------------+-----------------------+--------------------|
          |     80MB      |      (2) 2M x 32      |    (2) 8M x 32     |
          |---------------+-----------------------+--------------------|
          |     96MB      |      (2) 8M x 32      |    (2) 4M x 32     |
          |---------------+-----------------------+--------------------|
          |     96MB      |      (2) 4M x 32      |    (2) 8M x 32     |
          |---------------+-----------------------+--------------------|
          |     128MB     |      (2) 8M x 32      |    (2) 8M x 32     |
          |------------------------------------------------------------|
          | Note: Board accepts EDO memory. Board also accepts x 36    |
          | SIMMs.                                                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         CACHE SIZE                         |
          |------------------------------------------------------------|
          |    Size    |   Bank 0    |       TAG       |      SL1      |
          |------------+-------------+-----------------+---------------|
          | 256KB (A)  | (8) 32K x 8 | (1) 8K/16K x 8  | Not installed |
          |------------+-------------+-----------------+---------------|
          | 256KB (B)  |    None     |      None       |   Installed   |
          |------------+-------------+-----------------+---------------|
          | 512KB (A)  | (8) 64K x 8 | (1) 16k/32K x 8 | Not installed |
          |------------+-------------+-----------------+---------------|
          | 512KB (B)  |    None     |      None       |   Installed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        CACHE JUMPER                        |
          |------------------------------------------------------------|
          |            Size            |             JP10              |
          |----------------------------+-------------------------------|
          |        256KB (A/B)         |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |        512KB (A/B)         |       Pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         CPU SPEED                          |
          |------------------------------------------------------------|
          | Setting  |   J25   |   JP7   |   JP9   |  JPS1   |  JPS2   |
          |----------+---------+---------+---------+---------+---------|
          |  75MHz   |  1 & 2  |  2 & 3  |  2 & 3  |  Open   |  Open   |
          |----------+---------+---------+---------+---------+---------|
          |  90MHz   |  2 & 3  |  2 & 3  |  2 & 3  | Closed  |  Open   |
          |----------+---------+---------+---------+---------+---------|
          |  100MHz  |  2 & 3  |  2 & 3  |  2 & 3  | Closed  | Closed  |
          |----------+---------+---------+---------+---------+---------|
          |  120MHz  |  2 & 3  |  1 & 2  |  2 & 3  | Closed  |  Open   |
          |----------+---------+---------+---------+---------+---------|
          |  133MHz  |  2 & 3  |  1 & 2  |  2 & 3  | Closed  | Closed  |
          |----------+---------+---------+---------+---------+---------|
          |  150MHz  |  2 & 3  |  1 & 2  |  1 & 2  | Closed  |  Open   |
          |----------+---------+---------+---------+---------+---------|
          |  166MHz  |  2 & 3  |  1 & 2  |  1 & 2  | Closed  | Closed  |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                          CPU TYPE                          |
          |------------------------------------------------------------|
          |          Setting           |              JP1              |
          |----------------------------+-------------------------------|
          |            P54C            |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |            P55C            |       Pins 2 & 3 closed       |
          +------------------------------------------------------------+