
PC CHIPS MANUFACTURING, LTD.

M726

Device Type        Mainboard
Processor          Pentium II/ Celeron
Processor Speed    233/266/300/333/350/366/400/450/500MHz
Chip Set           Unidentified
Audio Chip Set     3D Sound Pro
Maximum Onboard    768MB (SDRAM supported)
Memory
Cache              0/128/256/512KB (located on the CPU)
BIOS               AMI
Dimensions         220mm x 220mm
I/O Options        32-bit PCI slots (3), floppy drive interface, IDE
                   interfaces (2), parallel port, PS/2 mouse interface,
                   serial ports (2), ATX power connector, AGP slot, audio
                   in - CD-ROMs (2)

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose               Location

  AGP slot                  AGP        Sound and game           J3
                                       header

  ATX power connector       ATX        Speaker             J4/pins 1, 3,
                                                               5, 7

  Audio in - CD-ROM         CD1        Power LED &         J4/pins 2, 4,
                                       keylock               6, 8, 10

  Audio in - CD-ROM         CD2        Turbo LED          J4/pins 13 & 14

  Serial port 1            COM1        IDE interface      J4/pins 15 & 16
                                       LED

  Serial port 2            COM2        Reset switch       J4/pins 17 & 18

  Chassis fan power        FANC        Green PC LED       J4/pins 19 & 20

  CPU fan power            FANP        Digital audio in         JP6

  Floppy drive             FDC1        Digital audio            JP7
  interface                            out

  IDE interface 1          IDE1        32-bit PCI slots      PC1 - PC3

  IDE interface 2          IDE2        Parallel port           PRN1

  ATX form card             J2
  connector

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     CMOS memory normal operation            JP2           Pins 1 & 2
                                                              closed

      CMOS memory clear                       JP2           Pins 2 & 3
                                                              closed

     Microphone type select standard         JP3              Open

      Microphone type select special          JP3             Closed

     Onboard sound pro enabled               JP8           Pins 2 & 3
                                                              closed

      Onboard sound pro disabled              JP8           Pins 1 & 2
                                                              closed

                                        DIMM CONFIGURATION

             Size                     Bank 0                 Bank 1                 Bank 2

             8 MB                    1 M x 64                 None                   None

            16 MB                    1 M x 64               1 M x 64                 None

            16 MB                    2 M x 64                 None                   None

            24 MB                    1 M x 64               1 M x 64               1 M x 64

            32 MB                    2 M x 64               2 M x 64                 None

            32 MB                    4 M x 64                 None                   None

            40 MB                    2 M x 64               2 M x 64               1 M x 64

            48 MB                    2 M x 64               2 M x 64               2 M x 64

            64 MB                    4 M x 64               4 M x 64                 None

            64 MB                    8 M x 64                 None                   None

            80 MB                    4 M x 64               4 M x 64               2 M x 64

            96 MB                    4 M x 64               4 M x 64               4 M x 64

            128 MB                   8 M x 64               8 M x 64                 None

            128 MB                   16 M x 64                None                   None

            130 MB                   8 M x 64               8 M x 64               4 M x 64

            192 MB                   8 M x 64               8 M x 64               8 M x 64

            256 MB                   16 M x 64              16 M x 64                None

            256 MB                   32 M x 64                None                   None

            320 MB                   16 M x 64              16 M x 64              8 M x 64

            384 MB                   16 M x 64              16 M x 64              16 M x 64

            512 MB                   32 M x 64              32 M x 64                None

            640 MB                   32 M x 64              32 M x 64              16 M x 64

            768 MB                   32 M x 64              32 M x 64              32 M x 64

                                    DIMM VOLTAGE CONFIGURATION

           Voltage                     JP1A                   JP1B

             3.3v                Pins 1 & 2 closed      Pins 1 & 2 closed

              5v                 Pins 2 & 3 closed      Pins 2 & 3 closed

                            CACHE CONFIGURATION

  Note: 256KB/512KB cache is located on the Pentium II CPU. 128KB cache
  is located on the Celeron 300A & 333 CPU.

                  CPU MULTIPLIER SELECTION

  Multiplier     JP4A       JP4B        JP4C       JP4D

      2x        Closed     Closed      Closed     Closed

     2.5x        Open      Closed      Closed     Closed

      3x        Closed     Closed       Open      Closed

     3.5x        Open      Closed       Open      Closed

      4x        Closed     Closed      Closed      Open

     4.5x        Open      Closed      Closed      Open

      5x        Closed     Closed       Open       Open

     5.5x        Open      Closed       Open       Open

      6x        Closed      Open       Closed     Closed

     6.5x        Open       Open       Closed     Closed

      7x        Closed      Open        Open      Closed

     7.5x        Open       Open        Open      Closed

      8x        Closed      Open       Closed      Open

                          CPU FREQUENCY SELECTION

      Speed               JP5               JP10              JP11

      66MHz            Pins 2 & 3        Pins 1 & 2         Pins 1 & 2
                        closed             closed            closed

      100MHz           Pins 1 & 2        Pins 1 & 2         Pins 1 & 2
                        closed             closed            closed

      112MHz           Pins 1 & 2        Pins 1 & 2         Pins 2 & 3
                        closed             closed            closed

      133MHz           Pins 1 & 2        Pins 2 & 3         Pins 1 & 2
                        closed             closed            closed

