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# M TECHNOLOGY, INC.
R541 MIG
Device Type Mainboard
Processor CX 6X86/IBM 6X86/CX 6X86L/IBM 6X86L/CX
6X86MX/AM K5/
AM K6/Pentium/Pentium MMX
Processor Speed 90/100/120/133/150/166/180/200/233/266MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 128MB (EDO & SDRAM supported)
Memory
Maximum Video None
Memory
Cache 512KB
BIOS AMI
Dimensions 280mm x 220mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
IDE interfaces (2), parallel port, PS/2 mouse
interface, serial ports (2), IR connector,
USB connectors (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Power LED & | C1 | IDE interface 2 | CN5 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Speaker | C2 | IDE interface 1 | CN6 |
|-------------------+----------+------------------+----------|
| IDE interface LED | C3 | PS/2 mouse | CN7 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Reset switch | C4 | IR connector | IR1 |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN1 | 32-bit PCI slots | PC1 – |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN2 | USB connector 1 | USB1 |
|-------------------+----------+------------------+----------|
| Parallel port | CN3 | USB connector 2 | USB2 |
|-------------------+----------+------------------+----------|
| Floppy drive | CN4 | | |
| interface | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------+-------+-----------------|
| » | CMOS memory normal operation | JP18 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | CMOS memory clear | JP18 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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) 8M x 64 | (1) 8M x 64 | None |
|------------------------------------------------------------|
| Note: Board accepts EDO & SDRAM memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP1 |
|----------------------------+-------------------------------|
| 3.3v | Pins 3 & 5, 4 & 6 closed |
|----------------------------+-------------------------------|
| 5v | Pins 1 & 3, 2 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 512KB | (2) 64K x 32 |
+------------------------------------------------------------+
+-------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|-------------------------------------------------------------|
| CPU |Clock|Multiplier| JP2 | JP3 |JP4 | JP7 |JP8 | JP9 |
|speed |speed| | | | | | | |
|------+-----+----------+------+------+----+------+----+------|
|133MHz|55MHz| 2x |Closed|Closed|Open| Open |Open|Closed|
|------+-----+----------+------+------+----+------+----+------|
|150MHz|60MHz| 2x |Closed| Open |Open|Closed|Open|Closed|
|------+-----+----------+------+------+----+------+----+------|
|166MHz|66MHz| 2x | Open | Open |Open| Open |Open|Closed|
|------+-----+----------+------+------+----+------+----+------|
|200MHz|75MHz| 2x | Open |Closed|Open| Open |Open|Closed|
+-------------------------------------------------------------+
+-------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86) |
|-------------------------------------------------------------|
| CPU |Clock|Multiplier| JP2 | JP3 |JP4 | JP7 |JP8 | JP9 |
|speed |speed| | | | | | | |
|------+-----+----------+------+------+----+------+----+------|
|133MHz|55MHz| 2x |Closed|Closed|Open| Open |Open|Closed|
|------+-----+----------+------+------+----+------+----+------|
|150MHz|60MHz| 2x |Closed| Open |Open|Closed|Open|Closed|
|------+-----+----------+------+------+----+------+----+------|
|166MHz|66MHz| 2x | Open | Open |Open| Open |Open|Closed|
|------+-----+----------+------+------+----+------+----+------|
|200MHz|75MHz| 2x | Open |Closed|Open| Open |Open|Closed|
+-------------------------------------------------------------+
+-------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|-------------------------------------------------------------|
| CPU |Clock|Multiplier| JP2 | JP3 |JP4 | JP7 |JP8 | JP9 |
|speed |speed| | | | | | | |
|------+-----+----------+------+------+----+------+----+------|
|133MHz|55MHz| 2x |Closed|Closed|Open| Open |Open|Closed|
|------+-----+----------+------+------+----+------+----+------|
|150MHz|60MHz| 2x |Closed| Open |Open|Closed|Open|Closed|
|------+-----+----------+------+------+----+------+----+------|
|166MHz|66MHz| 2x | Open | Open |Open| Open |Open|Closed|
|------+-----+----------+------+------+----+------+----+------|
|200MHz|75MHz| 2x | Open |Closed|Open| Open |Open|Closed|
+-------------------------------------------------------------+
+-------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86L) |
|-------------------------------------------------------------|
| CPU |Clock|Multiplier| JP2 | JP3 |JP4 | JP7 |JP8 | JP9 |
|speed |speed| | | | | | | |
|------+-----+----------+------+------+----+------+----+------|
|133MHz|55MHz| 2x |Closed|Closed|Open| Open |Open|Closed|
|------+-----+----------+------+------+----+------+----+------|
|150MHz|60MHz| 2x |Closed| Open |Open|Closed|Open|Closed|
|------+-----+----------+------+------+----+------+----+------|
|166MHz|66MHz| 2x | Open | Open |Open| Open |Open|Closed|
|------+-----+----------+------+------+----+------+----+------|
|200MHz|75MHz| 2x | Open |Closed|Open| Open |Open|Closed|
+-------------------------------------------------------------+
+---------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|---------------------------------------------------------------|
| CPU |Clock|Multiplier| JP2 | JP3 |JP4 | JP7 | JP8 | JP9 |
|speed |speed| | | | | | | |
|------+-----+----------+------+------+----+------+------+------|
|166MHz|60MHz| 2.5x |Closed| Open |Open|Closed|Closed|Closed|
|------+-----+----------+------+------+----+------+------+------|
|200MHz|66MHz| 2.5x | Open | Open |Open| Open |Closed|Closed|
|------+-----+----------+------+------+----+------+------+------|
|233MHz|66MHz| 3x | Open | Open |Open| Open |Closed| Open |
|------+-----+----------+------+------+----+------+------+------|
|233MHz|75MHz| 2.5x | Open |Closed|Open| Open |Closed|Closed|
|------+-----+----------+------+------+----+------+------+------|
|266MHz|66MHz| 3.5x | Open | Open |Open| Open | Open | Open |
|------+-----+----------+------+------+----+------+------+------|
|266MHz|75MHz| 3x | Open |Closed|Open| Open |Closed| Open |
+---------------------------------------------------------------+
+-------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|-------------------------------------------------------------|
| CPU |Clock|Multiplier| JP2 |JP3 |JP4 | JP7 | JP8 | JP9 |
|speed |speed| | | | | | | |
|------+-----+----------+------+----+----+------+------+------|
|90MHz |60MHz| 1.5x |Closed|Open|Open|Closed| Open | Open |
|------+-----+----------+------+----+----+------+------+------|
|100MHz|66MHz| 1.5x | Open |Open|Open| Open | Open | Open |
|------+-----+----------+------+----+----+------+------+------|
|166MHz|66MHz| 2.5x | Open |Open|Open| Open |Closed|Closed|
+-------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|JP2 |JP3 |JP4 |JP7 | JP8 | JP9 |
| speed | speed | | | | | | | |
|-------+-------+----------+----+----+----+----+------+------|
|166MHz | 66MHz | 2.5x |Open|Open|Open|Open|Closed|Closed|
|-------+-------+----------+----+----+----+----+------+------|
|200MHz | 66MHz | 3x |Open|Open|Open|Open|Closed| Open |
|-------+-------+----------+----+----+----+----+------+------|
|233MHz | 66MHz | 3.5x |Open|Open|Open|Open| Open | Open |
+------------------------------------------------------------+
+-------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|-------------------------------------------------------------|
| CPU |Clock|Multiplier| JP2 |JP3 |JP4 | JP7 | JP8 | JP9 |
|speed |speed| | | | | | | |
|------+-----+----------+------+----+----+------+------+------|
|90MHz |60MHz| 1.5x |Closed|Open|Open|Closed| Open | Open |
|------+-----+----------+------+----+----+------+------+------|
|100MHz|66MHz| 1.5x | Open |Open|Open| Open | Open | Open |
|------+-----+----------+------+----+----+------+------+------|
|120MHz|60MHz| 2x |Closed|Open|Open|Closed| Open |Closed|
|------+-----+----------+------+----+----+------+------+------|
|133MHz|66MHz| 2x | Open |Open|Open| Open | Open |Closed|
|------+-----+----------+------+----+----+------+------+------|
|150MHz|60MHz| 2.5x |Closed|Open|Open|Closed|Closed|Closed|
|------+-----+----------+------+----+----+------+------+------|
|166MHz|66MHz| 2.5x | Open |Open|Open| Open |Closed|Closed|
|------+-----+----------+------+----+----+------+------+------|
|180MHz|60MHz| 3x |Closed|Open|Open|Closed|Closed| Open |
|------+-----+----------+------+----+----+------+------+------|
|200MHz|66MHz| 3x | Open |Open|Open| Open |Closed| Open |
+-------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|JP2 |JP3 |JP4 |JP7 | JP8 | JP9 |
| speed | speed | | | | | | | |
|-------+-------+----------+----+----+----+----+------+------|
|166MHz | 66MHz | 2.5x |Open|Open|Open|Open|Closed|Closed|
|-------+-------+----------+----+----+----+----+------+------|
|200MHz | 66MHz | 3x |Open|Open|Open|Open|Closed| Open |
|-------+-------+----------+----+----+----+----+------+------|
|233MHz | 66MHz | 3.5x |Open|Open|Open|Open| Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP6 | JP12 |
|---------+------------------------------+-------------------|
| 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) |
|------------------------------------------------------------|
| Voltage | V core | JP6 | JP12 |
|--------------+------------+----------+---------------------|
| 3.4v | 2.5v | Open | Pins 11 & 12 closed |
|--------------+------------+----------+---------------------|
| 3.4v | 2.8v | Open | Pins 9 & 10 closed |
|--------------+------------+----------+---------------------|
| 3.4v | 2.9v | Open | Pins 7 & 8 closed |
|--------------+------------+----------+---------------------|
| 3.4v | 3.2v | Open | Pins 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS SELECTION |
|------------------------------------------------------------|
| Type | JP16 | JP17 |
|------------------+--------------------+--------------------|
| 1M/5v | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 2M/5v | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+