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# DATAEXPERT CORPORATION
MBX8440
Device Type Mainboard
Processor Pentium II/Celeron
Processor Speed 233/266/300/333/350/400/450MHz
Chip Set Intel 440BX
Maximum Onboard 384MB (EDO & SDRAM supported)
Memory
Cache 0/128/256/512KB (located on the CPU)
BIOS Award
Dimensions 305mm x 170mm
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, SB-link connector
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+------------------+-----------|
| AGP slot | AGP | CPU fan power | FAN2 |
|------------------+----------+------------------+-----------|
| ATX power | ATX | IR connector | IR |
| connector | | | |
|------------------+----------+------------------+-----------|
| Parallel port | CN1 | Power LED & | J1/pins 1 |
| | | keylock | - 5 |
|------------------+----------+------------------+-----------|
| Serial port 2 | CN2 | IDE interface | J1/pins 6 |
| | | LED | & 16 |
|------------------+----------+------------------+-----------|
| Serial port 1 | CN3 | Green PC LED | J1/pins 7 |
| | | | & 17 |
|------------------+----------+------------------+-----------|
| USB connector 1 | CN4 | Green PC | J1/pins 8 |
| | | connector | & 18 |
|------------------+----------+------------------+-----------|
| USB connector 2 | CN5 | Soft off power | J1/pins 9 |
| | | supply | & 19 |
|------------------+----------+------------------+-----------|
| PS/2 mouse port | CN6 | Reset switch | J1/pins |
| | | | 10 & 20 |
|------------------+----------+------------------+-----------|
| IDE interface 2 | CN7 | Speaker | J1/pins |
| | | | 11 - 14 |
|------------------+----------+------------------+-----------|
| IDE interface 1 | CN8 | SB-link | J4 |
| | | connector | |
|------------------+----------+------------------+-----------|
| Floppy drive | CN9 | Thermistor | RT1 |
| interface | | connector | |
|------------------+----------+------------------+-----------|
| Chassis fan | FAN1 | 32-bit PCI slots | PC1 - PC4 |
| power | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------+---------------+---------------+---------------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 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 |
|------------+---------------+---------------+---------------|
| 176MB | (1) 16M x 64 | (1) 4M x 64 | (1) 2M 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 | Clock |Multiplier|JP2 | JP1A | JP1B | JP1C | JP1D |
| speed | speed | | | | | | |
|-------+--------+----------+----+------+------+------+------|
|233MHz | 66MHz | 3.5x |2 & | Open | Open |Closed| Open |
| | | | 3 | | | | |
|-------+--------+----------+----+------+------+------+------|
|266MHz | 66MHz | 4x |2 & |Closed|Closed| Open |Closed|
| | | | 3 | | | | |
|-------+--------+----------+----+------+------+------+------|
|300MHz | 66MHz | 4.5x |2 & | Open |Closed| Open |Closed|
| | | | 3 | | | | |
|-------+--------+----------+----+------+------+------+------|
|300MHz | 100MHz | 3x |1 & |Closed| Open |Closed| Open |
| | | | 2 | | | | |
|-------+--------+----------+----+------+------+------+------|
|333MHz | 66MHz | 5x |2 & |Closed| Open | Open |Closed|
| | | | 3 | | | | |
|-------+--------+----------+----+------+------+------+------|
|350MHz | 100MHz | 3.5x |1 & | Open | Open |Closed| Open |
| | | | 2 | | | | |
|-------+--------+----------+----+------+------+------+------|
|400MHz | 100MHz | 4x |1 & |Closed|Closed| Open |Closed|
| | | | 2 | | | | |
|-------+--------+----------+----+------+------+------+------|
|450MHz | 100MHz | 4.5x |1 & | Open |Closed| Open |Closed|
| | | | 2 | | | | |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+