SUPER MICRO

P55CMA, P55CMS (REV. 2.0)

Processor             Pentium
Processor Speed       75/90/100/120/133/150/166MHz
Chip Set              Intel
Video Chip Set        None
Maximum Onboard       128MB (EDO supported)
Memory
Maximum Video Memory  None
Cache                 256/512KB
BIOS                  AMI
Dimensions            330mm x 218mm
I/O Options           PS/2 mouse port, parallel port, serial ports (2),
                      32-bit PCI slots (4), floppy drive interface, IDE
                      interfaces (2), cache slot, VRM connector, Legacy
                      connector, IR connector
NPU Options           None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  VRM connector               J1       External battery           JP30

  Chassis fan power          J18       Turbo LED                  JP32

  Power LED & keylock        J32       IR connector               JP68

  IDE interface LED          J34       Serial port 2              JS1

  Reset switch               J35       Serial port 1              JS2

  Speaker                    J39       Parallel port              JS3

  IDE interface 1            J70       Floppy drive               JS4
                                       interface

  IDE interface 2            J71       32-bit PCI slots         PC1 - PC4

  Legacy connector           J85       Cache slot                 SL1

  PS/2 mouse port            J96

  Note: J18 may not be present on all boards.

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

  »   Factory configured - do not           J28             Closed
      alter

  »   Factory configured - do not           J37        Pins 1 & 2 closed
      alter

  »   Factory configured - do not           J41          Unidentified
      alter

  »   CMOS memory normal operation          J42        Pins 1 & 2 closed

      CMOS memory clear                     J42        Pins 2 & 3 closed

  »   Factory configured - do not           J43              Open
      alter

  »   ISA CLCK = PCI CLCK/4                 J67        Pins 2 & 3 closed

      ISA CLCK = PCI CLCK/3                 J67        Pins 1 & 2 closed

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

      8MB        (2) 1M x 32      None

     16MB        (2) 2M x 32      None

     16MB        (2) 1M x 32   (2) 1M x 32

     24MB        (2) 1M x 32   (2) 2M x 32

     32MB        (2) 4M x 32      None

     32MB        (2) 2M x 32   (2) 2M x 32

     40MB        (2) 1M x 32   (2) 4M x 32

     48MB        (2) 2M x 32   (2) 4M x 32

     64MB        (2) 8M x 32      None

     64MB        (2) 4M x 32   (2) 4M x 32

     72MB        (2) 1M x 32   (2) 8M x 32

     80MB        (2) 2M x 32   (2) 8M x 32

     96MB        (2) 4M x 32   (2) 8M x 32

     128MB       (2) 8M x 32   (2) 8M x 32

  Note: Board accepts EDO memory.

                CACHE CONFIGURATION

           Size                      SL1

          256KB            256KB module installed

          512KB            512KB module installed

               CPU SPEED SELECTION

  Speed      J27       J29       J31       J40

  75MHz      Open     Closed    Closed     Open

  90MHz      Open     Closed     Open      Open

  100MHz     Open      Open     Closed     Open

  120MHz    Closed    Closed     Open      Open

  133MHz    Closed     Open     Closed     Open

  150MHz    Closed     Open     Closed    Closed

  166MHz    Closed     Open     Closed    Closed

          CPU VOLTAGE SELECTION

       Voltage               JP11

        3.3v          Pins 2 & 3 closed

        3.4v                 Open

        3.5v          Pins 1 & 2 closed