
DATAEXPERT CORPORATION

MLX8440-OS

Device Type              Mainboard
Processor                Pentium II/Celeron
Processor Speed          233/266/300/333MHz
Chip Set                 Intel 440LX
Maximum Onboard Memory   384MB (EDO & SDRAM supported)
Audio Chip Set           Yamaha
Cache                    0/128/256/512KB (located on the CPU)
BIOS                     Award
Dimensions               305mm x 180mm
I/O Options              32-bit PCI slots (4), floppy drive interface,
                         green PC connector, IDE interfaces (2), parallel
                         port, PS/2 mouse port, serial ports (2), IR
                         connector, USB connectors (2), ATX power
                         connector, AGP slot, line in, line out,
                         microphone in, audio in - CD-ROMs (2)

[Image]

                                CONNECTIONS

  Purpose               Location      Purpose                 Location

  AGP slot                 AGP        Power LED & keylock   J1/pins 1 - 5

  ATX power                ATX        IDE interface LED      J1/pins 6 &
  connector                                                      16

  Game/MIDI port           CN1        Green PC LED           J1/pins 7 &
                                                                 17

  Microphone in            CN2        Green PC connector     J1/pins 8 &
                                                                 18

  Line in                  CN3        Soft off power         J1/pins 9 &
                                      supply                     19

  Line out                 CN4        Reset switch           J1/pins 10 &
                                                                 20

  Serial port 2            CN5        Speaker                J1/pins 11 -
                                                                 14

  Serial port 1            CN6        Audio in - CD-ROM          J2
                                      (Panasonic)

  Parallel port            CN7        Audio in - CD-ROM          J3
                                      (Sony)

  USB connector 1          CN8        IR connector               J4

  USB connector 2          CN9        Chassis fan power          J5

  PS/2 mouse port         CN10        CPU fan power              JX1

  IDE interface 2         CN11        Thermistor                 RT1
                                      connector

  IDE interface 1         CN12        32-bit PCI slots        PC1 - PC4

  Floppy drive            CN13
  interface

                    DIMM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2

      8MB       (1) 1M x 64        None          None

     16MB       (1) 2M x 64        None          None

     16MB       (1) 1M x 64    (1) 1M x 64       None

     24MB       (1) 2M x 64    (1) 1M x 64       None

     24MB       (1) 1M x 64    (1) 1M x 64    (1) 1M x 64

     32MB       (1) 4M x 64        None          None

     32MB       (1) 2M x 64    (1) 1M x 64    (1) 1M x 64

     32MB       (1) 2M x 64    (1) 2M x 64       None

     40MB       (1) 4M x 64    (1) 1M x 64       None

     40MB       (1) 2M x 64    (1) 2M x 64    (1) 1M x 64

     48MB       (1) 4M x 64    (1) 1M x 64    (1) 1M x 64

     48MB       (1) 4M x 64    (1) 2M x 64       None

     48MB       (1) 2M x 64    (1) 2M x 64    (1) 2M x 64

     56MB       (1) 4M x 64    (1) 2M x 64    (1) 1M x 64

     64MB       (1) 8M x 64        None          None

     64MB       (1) 4M x 64    (1) 2M x 64    (1) 2M x 64

     64MB       (1) 4M x 64    (1) 4M x 64       None

     72MB       (1) 8M x 64    (1) 1M x 64       None

     72MB       (1) 4M x 64    (1) 4M x 64    (1) 1M x 64

     80MB       (1) 8M x 64    (1) 1M x 64    (1) 1M x 64

     80MB       (1) 8M x 64    (1) 2M x 64       None

     80MB       (1) 4M x 64    (1) 4M x 64    (1) 2M x 64

                  DIMM CONFIGURATION (CON'T)

      Size          Bank 0          Bank 1          Bank 2

      88MB        (1) 8M x 64     (1) 2M x 64    (1) 1M x 64

      96MB        (1) 8M x 64     (1) 2M x 64    (1) 2M x 64

      96MB        (1) 8M x 64     (1) 4M x 64        None

      96MB        (1) 4M x 64     (1) 4M x 64    (1) 4M x 64

     104MB        (1) 8M x 64     (1) 4M x 64    (1) 1M x 64

     112MB        (1) 8M x 64     (1) 4M x 64    (1) 2M x 64

     128MB       (1) 16M x 64        None            None

     128MB        (1) 8M x 64     (1) 4M x 64    (1) 4M x 64

     128MB        (1) 8M x 64     (1) 8M x 64        None

     136MB       (1) 16M x 64     (1) 1M x 64        None

     136MB        (1) 8M x 64     (1) 8M x 64    (1) 1M x 64

     144MB       (1) 16M x 64     (1) 1M x 64    (1) 1M x 64

     144MB       (1) 16M x 64     (1) 2M x 64        None

     144MB        (1) 8M x 64     (1) 8M x 64    (1) 2M x 64

     152MB       (1) 16M x 64     (1) 2M x 64    (1) 1M x 64

     160MB       (1) 16M x 64     (1) 2M x 64    (1) 2M x 64

     160MB       (1) 16M x 64     (1) 4M x 64        None

     160MB        (1) 8M x 64     (1) 8M x 64    (1) 4M x 64

     168MB       (1) 16M x 64     (1) 4M x 64    (1) 1M x 64

     192MB       (1) 16M x 64     (1) 4M x 64    (1) 4M x 64

     192MB       (1) 16M x 64     (1) 8M x 64        None

     192MB        (1) 8M x 64     (1) 8M x 64    (1) 8M x 64

     200MB       (1) 16M x 64     (1) 8M x 64    (1) 1M x 64

     208MB       (1) 16M x 64     (1) 8M x 64    (1) 2M x 64

     224MB       (1) 16M x 64     (1) 8M x 64    (1) 4M x 64

     256MB       (1) 16M x 64     (1) 8M x 64    (1) 8M x 64

     384MB       (1) 16M x 64    (1) 16M x 64    (1) 16M x 64

  Note: Board accepts EDO & SDRAM memory.

                            CACHE CONFIGURATION

  Note: 256KB/512KB cache is located on the Pentium II CPU. 128KB cache
  is located on the Celeron 300A & 333 CPU.

                            CPU SPEED SELECTION

  CPU speed      Clock      Multiplier      JPXA       JPXB        JPXC
                 speed

   233MHz        66MHz         3.5x         2 & 3      2 & 3      2 & 3

   266MHz        66MHz          4x          2 & 3      2 & 3      2 & 3

   300MHz        66MHz         4.5x         2 & 3      2 & 3      2 & 3

   333MHz        66MHz          5x          2 & 3      2 & 3      2 & 3

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (CON'T)

    CPU      Clock    Multiplier     JP1A      JP1B      JP1C      JP1D
  speed     speed

  233MHz    66MHz        3.5x        Open      Open     Closed    Closed

  266MHz    66MHz         4x        Closed    Closed     Open     Closed

  300MHz    66MHz        4.5x        Open     Closed     Open     Closed

  333MHz    66MHz         5x        Closed     Open      Open     Closed

