
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

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Power LED & keylock         C1       IDE interface 2            CN5

  Speaker                     C2       IDE interface 1            CN6

  IDE interface LED           C3       PS/2 mouse interface       CN7

  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 interface     CN4

                        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 (CONT)

     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 &     Pins 3 & 4 closed
                                6 closed

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

