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# M TECHNOLOGY, INC.
R557MIG
Processor CX M1/IBM/AM K5/AM K6/Pentium
Processor Speed 90/100/120/133/150/166/180/200/233MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 512KB
BIOS Award
Dimensions 304mm x 244mm
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
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| ATX power | ATX | Power LED & | J1 |
| connector | | keylock | |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN1 | Speaker | J2 |
|-------------------+----------+------------------+----------|
| Parallel port | CN2 | Reset switch | J3 |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN3 | IDE interface | J4 |
| | | LED | |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN4 | Green PC | J5 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Floppy drive | CN5 | 32-bit PCI slots | PC1 – |
| interface | | | PC4 |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN6 | USB connector 1 | USB1 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN7 | USB connector 2 | USB2 |
|-------------------+----------+------------------+----------|
| IR connector | IR1 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | JP3 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|--------------+------------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M 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 |
|--------------+------------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|--------------+------------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|--------------+------------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|--------------+------------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|--------------+------------------------+--------------------|
| 128MB | (2) 16M x 36 | None |
|--------------+------------------------+--------------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 |
|--------------+------------------------+--------------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 |
|--------------+------------------------+--------------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 |
|--------------+------------------------+--------------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 |
|--------------+------------------------+--------------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Board also accepts x 32 |
| SIMMs. Banks are interchangeable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP12 |
|----------------------------+-------------------------------|
| 3.3v | Pins 3 & 5, 4 & 6 closed |
|----------------------------+-------------------------------|
| 5v | Pins 1 & 3, 2 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 512KB | (2) 64K x 32 | Unidentified |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP1 |JP2 | JP4 | JP8 | JP9 |
| speed | speed | | | | | | |
|-------+--------+----------+------+----+------+------+------|
|133MHz | 55MHz | 2x |Closed|Open| Open |Closed|Closed|
|-------+--------+----------+------+----+------+------+------|
|150MHz | 60MHz | 2x |Closed|Open|Closed|Closed| Open |
|-------+--------+----------+------+----+------+------+------|
|166MHz | 66MHz | 2x |Closed|Open| Open | Open | Open |
|-------+--------+----------+------+----+------+------+------|
|200MHz | 75MHz | 2x |Closed|Open| Open | Open |Closed|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP1 |JP2 | JP4 | JP8 | JP9 |
| speed | speed | | | | | | |
|-------+--------+----------+------+----+------+------+------|
|133MHz | 55MHz | 2x |Closed|Open| Open |Closed|Closed|
|-------+--------+----------+------+----+------+------+------|
|150MHz | 60MHz | 2x |Closed|Open|Closed|Closed| Open |
|-------+--------+----------+------+----+------+------+------|
|166MHz | 66MHz | 2x |Closed|Open| Open | Open | Open |
|-------+--------+----------+------+----+------+------+------|
|200MHz | 75MHz | 2x |Closed|Open| Open | Open |Closed|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP1 | JP2 | JP4 | JP8 |JP9 |
| speed | speed | | | | | | |
|-------+--------+----------+------+------+------+------+----|
| 90MHz | 60MHz | 1.5x | Open | Open |Closed|Closed|Open|
|-------+--------+----------+------+------+------+------+----|
|100MHz | 66MHz | 1.5x | Open | Open | Open | Open |Open|
|-------+--------+----------+------+------+------+------+----|
|166MHz | 66MHz | 2.5x |Closed|Closed| Open | Open |Open|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD K6) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| JP1 | JP2 |JP4 |JP8 |JP9 |
| | speed | | | | | | |
|---------+----------+----------+------+------+----+----+----|
| 166MHz | 66MHz | 2.5x |Closed|Closed|Open|Open|Open|
|---------+----------+----------+------+------+----+----+----|
| 200MHz | 66MHz | 3x | Open |Closed|Open|Open|Open|
|---------+----------+----------+------+------+----+----+----|
| 233MHz | 66MHz | 3.5x | Open | Open |Open|Open|Open|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP1 | JP2 | JP4 | JP8 |JP9 |
| speed | speed | | | | | | |
|-------+--------+----------+------+------+------+------+----|
| 90MHz | 60MHz | 1.5x | Open | Open |Closed|Closed|Open|
|-------+--------+----------+------+------+------+------+----|
|100MHz | 66MHz | 1.5x | Open | Open | Open | Open |Open|
|-------+--------+----------+------+------+------+------+----|
|120MHz | 60MHz | 2x |Closed| Open |Closed|Closed|Open|
|-------+--------+----------+------+------+------+------+----|
|133MHz | 66MHz | 2x |Closed| Open | Open | Open |Open|
|-------+--------+----------+------+------+------+------+----|
|150MHz | 60MHz | 2.5x |Closed|Closed|Closed|Closed|Open|
|-------+--------+----------+------+------+------+------+----|
|166MHz | 66MHz | 2.5x |Closed|Closed| Open | Open |Open|
|-------+--------+----------+------+------+------+------+----|
|180MHz | 60MHz | 3x | Open |Closed|Closed|Closed|Open|
|-------+--------+----------+------+------+------+------+----|
|200MHz | 66MHz | 3x | Open |Closed| Open | Open |Open|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP7 | JP19 |
|---------+------------------------------+-------------------|
| 3.4v | Pins 1 & 2, 3 & 4, 5 & 6 | Pins 3 & 4 closed |
| | closed | |
|---------+------------------------------+-------------------|
| 3.5v | Pins 1 & 2, 3 & 4, 5 & 6 | Pins 1 & 2 closed |
| | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| V core | JP7 | JP19 |
|--------------------+-----------------+---------------------|
| 2.5v | Open | Pins 11 & 12 closed |
|--------------------+-----------------+---------------------|
| 2.8v | Open | Pins 9 & 10 closed |
|--------------------+-----------------+---------------------|
| 2.9v | Open | Pins 7 & 8 closed |
|--------------------+-----------------+---------------------|
| 3.2v | Open | Pins 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLASH BIOS SELECTION |
|------------------------------------------------------------|
| Setting | JP17 | JP18 |
|------------------+--------------------+--------------------|
| 2M/5v | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 1M/5v | Pins 1 & 2 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+