
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

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  ATX power connector        ATX       Power LED & keylock         J1

  Serial port 2              CN1       Speaker                     J2

  Parallel port              CN2       Reset switch                J3

  PS/2 mouse port            CN3       IDE interface LED           J4

  Serial port 1              CN4       Green PC connector          J5

  Floppy drive interface     CN5       32-bit PCI slots         PC1  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     Clock    Multiplier     JP1      JP2      JP4    JP8     JP9
  speed     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      Pins 3 & 4 closed
                                & 6 closed

          3.5v             Pins 1 & 2, 3 & 4, 5      Pins 1 & 2 closed
                                & 6 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

