
IBM CORPORATION

PC300 (TYPE 6588)

Device Type                Mainboard
Processor                  Pentium II
Processor Speed            233/266/300MHz
Chip Set                   Unidentified
Video Chip Set             Unidentified
Maximum Onboard Memory     512MB (EDO supported)
Maximum Video Memory       Unidentified
Cache                      256/512KB (located on Pentium II CPU)
BIOS                       Unidentified
Dimensions                 330mm x 218mm
I/O Options                Ethernet 10BaseT connector, floppy drive
                           interface, IDE interfaces (2), parallel port,
                           PS/2 mouse port, serial port, VGA feature
                           connector, VGA port, riser slot, IR connector,
                           USB connectors (2), line in, line out, wavetable
                           connector, audio in  CD-ROM
NPU Options                None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  5v auxiliary power          C1       Ethernet 10BaseT           CN2
                                       connector

  Telejack connector          C2       USB connector 2            CN3

  Audio in - CD-ROM           C3       USB connector 1            CN4

  Wavetable connector         C4       Parallel port              CN5

  5v power                    C5       PS/2 mouse port            CN6

  3.3v auxiliary power        C6       Line out                   CN7

  Power switch                C7       Line in                    CN8
  connector

  Power LED/IDE               C8       VGA feature connector      CN9
  interface LED

  CPU fan power               C9       Floppy drive               CN10
                                       interface

  Chassis fan power          C10       IDE interface 2            CN11

  SCSI interface LED         C11       IDE interface 1            CN12

  Wake on LAN connector      C12       IR connector               J3M1

  Wake on modem              C13       Serial port                J4M1
  connector

  Chassis security           C14       Riser slot                 SL1
  connector

  VGA port                   CN1

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     Flash BIOS normal operation              J1           Pins 5 & 6
                                                              closed

      Flash BIOS recovery mode                 J1           Pins 4 & 5
                                                              closed

      Floppy drive normal operation            J2           Pins 5 & 6
                                                              closed

      Floppy drive read only                   J2           Pins 4 & 5
                                                              closed

     Factory configured - do not alter        J4           Pins 2 & 3
                                                              closed

     CMOS memory normal operation             J4           Pins 5 & 6
                                                              closed

      CMOS memory clear                        J4           Pins 4 & 5
                                                              closed

      Password normal operation                J5           Pins 2 & 3
                                                              closed

      Password clear                           J5           Pins 1 & 2
                                                              closed

      Setup access normal operation            J5           Pins 5 & 6
                                                              closed

      Setup access disabled                    J5           Pins 4 & 5
                                                              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

     32MB       (1) 1M x 64    (1) 1M x 64    (1) 1M x 64

                  DIMM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1          Bank 2

      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) 4M x 64        None

      64MB        (1) 2M x 64     (1) 2M x 64    (1) 2M x 64

      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) 4M x 64     (1) 4M x 64    (1) 2M x 64

      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) 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) 16M x 64        None            None

     128MB        (1) 8M x 64     (1) 4M x 64    (1) 4M x 64

     128MB        (1) 8M x 64     (1) 8M x 64        None

     144MB       (1) 16M x 64     (1) 1M x 64    (1) 1M x 64

     144MB       (1) 16M x 64     (1) 2M x 64        None

     144MB        (1) 8M x 64     (1) 8M x 64    (1) 2M x 64

     152MB       (1) 16M x 64     (1) 2M x 64    (1) 1M x 64

     160MB       (1) 16M x 64     (1) 2M x 64    (1) 2M x 64

     160MB        (1) 8M x 64     (1) 8M x 64    (1) 4M x 64

     168MB       (1) 16M x 64     (1) 4M x 64    (1) 1M x 64

     176MB       (1) 16M x 64     (1) 4M x 64    (1) 2M x 64

     192MB       (1) 16M x 64     (1) 4M x 64    (1) 4M x 64

     192MB        (1) 8M x 64     (1) 8M x 64    (1) 8M x 64

     200MB       (1) 16M x 64     (1) 8M x 64    (1) 1M x 64

     208MB       (1) 16M x 64     (1) 8M x 64    (1) 2M x 64

     224MB       (1) 16M x 64     (1) 8M x 64    (1) 4M x 64

     256MB       (1) 16M x 64     (1) 8M x 64    (1) 8M x 64

     384MB       (1) 16M x 64    (1) 16M x 64    (1) 16M x 64

     512MB       (1) 32M x 64    (1) 32M x 64        None

            Note: Board accepts EDO memory.

                     CACHE CONFIGURATION

  Note: 256KB/512KB cache is located on the Pentium II CPU.

                     VIDEO MEMORY CONFIGURATION

  Note: The size and location of the video memory is unidentified.

                            CPU SPEED SELECTION

      CPU speed       Clock speed     Multiplier        J2         J3

       233MHz            66MHz           3.5x          2 & 3     2 & 3, 5
                                                                   & 6

       266MHz            66MHz            4x           1 & 2     1 & 2, 4
                                                                   & 5

       300MHz            66MHz           4.5x          1 & 2     2 & 3, 4
                                                                   & 5

  Note: Pins designated should be in the closed position.

