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# BEK-TRONIC TECHNOLOGY, INC.
BEK-5731
Processor Pentium
Processor Speed 75/90/100/120/125/133/150/166/180/200MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 280mm x 220mm
I/O Options 32-bit PCI slots (4), green PC connector,
floppy drive interface, IDE interfaces (2),
parallel port, PS/2 mouse interface, serial
ports (2), cache slot, IR connector, USB
connectors (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| PS/2 mouse | J1 | IR connector | J9 |
| interface | | | |
|-------------------+----------+------------------+----------|
| Serial port 1 | J2 | Reset switch | J10 |
|-------------------+----------+------------------+----------|
| Parallel port | J3 | Power LED & | J11 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| Floppy drive | J4 | Speaker | J12 |
| interface | | | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | J5 | USB connector 2 | JP3 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | J6 | USB connector 1 | JP4 |
|-------------------+----------+------------------+----------|
| Serial port 2 | J7 | Green PC | JP22 |
| | | connector | |
|-------------------+----------+------------------+----------|
| IDE interface LED | J8 | 32-bit PCI slots | PC1 – |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| Turbo LED | J8A | Cache slot | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| | On board I/O enabled | JP1 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | On board I/O disabled | JP1 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP2 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP8 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP8A | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Pipeline address enabled | JP13 | Closed |
|---+---------------------------------+-------+--------------|
| | Pipeline address disabled | JP13 | Open |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP16 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Cache write select write back | JP17 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Cache write select write | JP17 | Pins 1 & 2 |
| | through | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 12v | JP18 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 5v | JP18 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP25 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | CPU regulator voltage select 1 | JP28 | Pins 1 & 2 |
| | regulator voltage | | closed |
|---+---------------------------------+-------+--------------|
| | CPU regulator voltage select 2 | JP28 | Pins 2 & 3 |
| | regulator voltage | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 2 |
|----------------------------+-------------------------------|
| 8MB | (1) 1M x 64 |
|----------------------------+-------------------------------|
| 16MB | (1) 2M x 64 |
|----------------------------+-------------------------------|
| 32MB | (1) 4M x 64 |
|----------------------------+-------------------------------|
| 64MB | (1) 8M x 64 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 | TAG |
|-----------+--------------+-------------------+-------------|
| 256KB (A) | (2) 32K x 32 | Not installed | (1) 32K x 8 |
|-----------+--------------+-------------------+-------------|
| 256KB (B) | None | 256KB module | (1) 32K x 8 |
| | | installed | |
|-----------+--------------+-------------------+-------------|
| 512KB (A) | (2) 32K x 32 | 256KB module | (1) 32K x 8 |
| | | installed | |
|-----------+--------------+-------------------+-------------|
| 512KB (B) | (2) 64K x 32 | Not installed | (1) 32K x 8 |
|-----------+--------------+-------------------+-------------|
| 512KB (C) | None | 512KB module | (1) 32K x 8 |
| | | installed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP12 | JP14 | JP15 |
|-----------+-----------------+------------+--------+--------|
| 256KB (A) | Pins 2 & 3 | Pins 2 & 3 | Open | Closed |
| | closed | closed | | |
|-----------+-----------------+------------+--------+--------|
| 256KB (B) | Pins 2 & 3 | Pins 2 & 3 | Open | Open |
| | closed | closed | | |
|-----------+-----------------+------------+--------+--------|
| 512KB (A) | Pins 1 & 2 | Pins 1 & 2 | Closed | Open |
| | closed | closed | | |
|-----------+-----------------+------------+--------+--------|
| 512KB (B) | Pins 1 & 2 | Pins 1 & 2 | Closed | Open |
| | closed | closed | | |
|-----------+-----------------+------------+--------+--------|
| 512KB (C) | Pins 2 & 3 | Pins 2 & 3 | Open | Closed |
| | closed | closed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE TAG VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP9 |
|----------------------------+-------------------------------|
| 3.3v | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 5v | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU |Clock |Multiplier| JP5 | JP6 | JP7 | JP26 | JP27 |
| speed |speed | | | | | | |
|-------+------+----------+------+------+------+------+------|
| 75MHz |50MHz | 1.5x | Open |Closed|Closed| Open | Open |
|-------+------+----------+------+------+------+------+------|
| 90MHz |60MHz | 1.5x |Closed| Open |Closed| Open | Open |
|-------+------+----------+------+------+------+------+------|
|100MHz |66MHz | 1.5x |Closed| Open | Open | Open | Open |
|-------+------+----------+------+------+------+------+------|
|100MHz |50MHz | 2x |Closed|Closed|Closed| Open |Closed|
|-------+------+----------+------+------+------+------+------|
|120MHz |60MHz | 2x |Closed| Open |Closed| Open |Closed|
|-------+------+----------+------+------+------+------+------|
|125MHz |50MHz | 2.5x | Open |Closed|Closed| Open |Closed|
|-------+------+----------+------+------+------+------+------|
|133MHz |66MHz | 2x |Closed| Open | Open | Open |Closed|
|-------+------+----------+------+------+------+------+------|
|150MHz |60MHz | 2.5x |Closed| Open |Closed|Closed|Closed|
|-------+------+----------+------+------+------+------+------|
|166MHz |66MHz | 2.5x |Closed| Open | Open |Closed|Closed|
|-------+------+----------+------+------+------+------+------|
|180MHz |60MHz | 3x |Closed| Open |Closed|Closed| Open |
|-------+------+----------+------+------+------+------+------|
|200MHz |66MHz | 3x |Closed| Open | Open |Closed| Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP21 | JP29 |
|------+--------------------------+--------------------------|
| P54C | Pins 1 & 3, 2 & 4 closed | Pins 1 & 3, 2 & 4 closed |
|------+--------------------------+--------------------------|
| P55C | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP24 |
|----------------------------+-------------------------------|
| 2.5v | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 3.4v | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | JP20 | JP24 |
|----------+---------+-------------------+-------------------|
| 2.5v | 3v | Pins 2 & 3 closed | Pins 1 & 2 closed |
|----------+---------+-------------------+-------------------|
| 2.5v | 3.4v | Pins 1 & 2 closed | Pins 1 & 2 closed |
|----------+---------+-------------------+-------------------|
| 3.4v | 3v | Pins 2 & 3 closed | Pins 2 & 3 closed |
|----------+---------+-------------------+-------------------|
| 3.4v | 3.4v | Pins 1 & 2 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CMOS SELECTION |
|------------------------------------------------------------|
| Setting | JP11 | JP19 |
|----------------------------------+------------+------------|
| » | CMOS memory normal operation | Open | Open |
|---+------------------------------+------------+------------|
| | CMOS memory clear | Closed | Closed |
+------------------------------------------------------------+