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# DATAEXPERT CORPORATION
MLX8440-OS
Device Type Mainboard
Processor Pentium II/Celeron
Processor Speed 233/266/300/333MHz
Chip Set Intel 440LX
Maximum Onboard 384MB (EDO & SDRAM supported)
Memory
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)
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+-------------------+-----------|
| AGP slot | AGP | Power LED & | J1/pins 1 |
| | | keylock | - 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 | J1/pins 8 |
| | | connector | & 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 speed|Clock speed|Multiplier| JP1A | JP1B | JP1C | JP1D |
|---------+-----------+----------+------+------+------+------|
| 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|
+------------------------------------------------------------+