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       # DATAEXPERT CORPORATION
       
          MGX7520 (BABY AT)
       
          Device Type      Mainboard                                     
          Processor        Cyrix GXM                                     
          Processor Speed  Unidentified                                  
          Chip Set         Cyrix CX5520                                  
          Maximum Onboard  256MB (SDRAM supported)                       
          Memory           
          Video Chip Set   Cyrix (integrated)                            
          Audio Chip Set   Cyrix (integrated)                            
          Maximum Video    Unidentified                                  
          Memory           
          Cache            None                                          
          BIOS             Award                                         
          Dimensions       220mm x 220mm                                 
          I/O Options      32-bit PCI slots (2), floppy drive interface, 
                           game interface, green PC connector, IDE       
                           interfaces (2), parallel port, PS/2 mouse     
                           interface, serial ports (2), ATX power        
                           connector, MIDI/TV out connector, audio in -  
                           CD-ROMs (2), soft off power supply            
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose         | Location | Purpose          |  Location  |
          |-----------------+----------+------------------+------------|
          | ATX-P connector |   ATXP   | Audio in -       |     J8     |
          |                 |          | CD-ROM           |            |
          |-----------------+----------+------------------+------------|
          | Parallel port   |   CN1    | Audio in -       |     J9     |
          |                 |          | CD-ROM           |            |
          |-----------------+----------+------------------+------------|
          | Serial port 2   |   CN3    | PS/2 mouse       |    JP5     |
          |                 |          | interface        |            |
          |-----------------+----------+------------------+------------|
          | Serial port 1   |   CN4    | Power LED &      | JP7/pins 1 |
          |                 |          | keylock          |    - 5     |
          |-----------------+----------+------------------+------------|
          | Floppy drive    |   CN5    | Green PC LED     | JP7/pins 8 |
          | interface       |          |                  |    & 9     |
          |-----------------+----------+------------------+------------|
          | IDE interface 2 |   CN6    | Soft off power   |  JP7/pins  |
          |                 |          | supply           |  10 & 11   |
          |-----------------+----------+------------------+------------|
          | IDE interface 1 |   CN7    | Reset switch     |  JP7/pins  |
          |                 |          |                  |  12 & 24   |
          |-----------------+----------+------------------+------------|
          | Game interface  |   CN8    | Speaker          |  JP7/pins  |
          |                 |          |                  |  13 - 16   |
          |-----------------+----------+------------------+------------|
          | MIDI/TV out     |   CN9    | IDE interface    |  JP7/pins  |
          | connector       |          | LED              |  20 & 21   |
          |-----------------+----------+------------------+------------|
          | Chassis fan     |   FAN    | Green PC         |  JP7/pins  |
          | power           |          | connector        |  22 & 23   |
          |-----------------+----------+------------------+------------|
          | IR connector    |   IR1    | 32-bit PCI slots | PC1 – PC2  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Label |   Position   |
          |-------------------------------------+-------+--------------|
          | » | Factory configured - do not     |  J1   | Unidentified |
          |   | alter                           |       |              |
          |---+---------------------------------+-------+--------------|
          | » | CMOS memory normal operation    | JP13  |  Pins 1 & 2  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | CMOS memory clear               | JP13  |  Pins 2 & 3  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     | JP14  | Unidentified |
          |   | alter                           |       |              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIMM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       8MB        |    (1) 1M x 64     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (1) 2M x 64     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (1) 1M x 64     |    (1) 1M x 64     |
          |------------------+--------------------+--------------------|
          |       24MB       |    (1) 2M x 64     |    (1) 1M x 64     |
          |------------------+--------------------+--------------------|
          |       32MB       |    (1) 4M x 64     |        None        |
          |------------------+--------------------+--------------------|
          |       32MB       |    (1) 2M x 64     |    (1) 2M x 64     |
          |------------------+--------------------+--------------------|
          |       40MB       |    (1) 4M x 64     |    (1) 1M x 64     |
          |------------------+--------------------+--------------------|
          |       48MB       |    (1) 4M x 64     |    (1) 2M x 64     |
          |------------------+--------------------+--------------------|
          |       64MB       |    (1) 8M x 64     |        None        |
          |------------------+--------------------+--------------------|
          |       64MB       |    (1) 4M x 64     |    (1) 4M x 64     |
          |------------------+--------------------+--------------------|
          |       72MB       |    (1) 8M x 64     |    (1) 1M x 64     |
          |------------------+--------------------+--------------------|
          |       80MB       |    (1) 8M x 64     |    (1) 2M x 64     |
          |------------------+--------------------+--------------------|
          |       96MB       |    (1) 8M x 64     |    (1) 4M x 64     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DIMM CONFIGURATION (CON’T)                 |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |      128MB       |    (1) 16M x 64    |        None        |
          |------------------+--------------------+--------------------|
          |      128MB       |    (1) 8M x 64     |    (1) 8M x 64     |
          |------------------+--------------------+--------------------|
          |      136MB       |    (1) 16M x 64    |    (1) 1M x 64     |
          |------------------+--------------------+--------------------|
          |      144MB       |    (1) 16M x 64    |    (1) 2M x 64     |
          |------------------+--------------------+--------------------|
          |      160MB       |    (1) 16M x 64    |    (1) 4M x 64     |
          |------------------+--------------------+--------------------|
          |      192MB       |    (1) 16M x 64    |    (1) 8M x 64     |
          |------------------+--------------------+--------------------|
          |      256MB       |    (1) 16M x 64    |    (1) 16M x 64    |
          |------------------------------------------------------------|
          |      Note: Board accepts SDRAM memory.                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VIDEO MEMORY CONFIGURATION                 |
          |------------------------------------------------------------|
          | Note: the size & location of the video memory is           |
          | unidentified.                                              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             CPU INTERNAL CLOCK SPEED SELECTION             |
          |------------------------------------------------------------|
          |           Speed            |              JP1              |
          |----------------------------+-------------------------------|
          |             6x             |   Pins 1 & 3, 4 & 6 closed    |
          |----------------------------+-------------------------------|
          |             7x             |   Pins 2 & 4, 3 & 5 closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CPU SPEED SELECTION                     |
          |------------------------------------------------------------|
          |           Speed            |              JP4              |
          |----------------------------+-------------------------------|
          |           30MHz            |   Pins 3 & 5, 4 & 6 closed    |
          |----------------------------+-------------------------------|
          |           33MHz            |   Pins 1 & 3, 4 & 6 closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU VOLTAGE SELECTION                    |
          |------------------------------------------------------------|
          |    Voltage     |     V core     |           JP2            |
          |----------------+----------------+--------------------------|
          |      3.3v      |   2.9v/3.6v    | Pins 1 & 2, 4 & 5 closed |
          |----------------+----------------+--------------------------|
          |   2.9v/3.6v    |   2.9v/3.6v    | Pins 2 & 3, 5 & 6 closed |
          +------------------------------------------------------------+