DIGITAL EQUIPMENT CORPORATION

PC 5500

Device Type             Mainboard
Processor               Pentium II
Processor Speed         233/266/300/333/366/400MHz
Chip Set                Intel
Video Chip Set          ESS
Maximum Onboard Memory  256MB (EDO supported)
Maximum Video Memory    2MB
Cache                   512KB (located on Pentium II CPU)
BIOS                    Unidentified
Dimensions              254mm x 218mm
I/O Options (CPU)       Parallel port, PS/2 mouse port, serial ports (2),
                        VGA feature connector, VGA port, USB connectors
                        (2)
I/O Options (backplane) 32-bit PCI slots (3), IDE interfaces (2), floppy
                        drive interface, game/MIDI port, parallel port,
                        100Base-T connector, 10Base-2 connector, audio in
                        - CD-ROM, fax/modem connector
NPU Options             None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Serial port                CN1       PS/2 mouse port             CN6

  Serial port                CN2       Parallel port               CN7

  USB connector 1            CN3       VGA feature connector       CN8

  USB connector 2            CN4       Video upgrade               CN9
                                       connectors

  VGA port                   CN5

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

  »   Boot block update disabled              J27           Pins 1 & 2
                                                              closed

      Boot block update enabled               J27           Pins 2 & 3
                                                              closed

  »   Password disabled                      SW1/5             Off

      Password enabled                       SW1/5              On

  »   BIOS normal operation                  SW1/6             Off

      BIOS recovery mode                     SW1/6              On

  »   CMOS memory normal operation           SW1/7             Off

      CMOS memory clear                      SW1/7              On

                            SIMM CONFIGURATION

     Size          Bank 0         Bank 1         Bank 2         Bank 3

     32MB        (2) 4M x 36       None           None           None

     32MB        (2) 2M x 36   (2) 2M x 36        None           None

     32MB        (2) 1M x 36   (2) 1M x 36    (2) 1M x 36    (2) 1M x 36

     40MB        (2) 4M x 36   (2) 1M x 36        None           None

     48MB        (2) 4M x 36   (2) 2M x 36        None           None

     48MB        (2) 2M x 36   (2) 2M x 36    (2) 2M x 36        None

     64MB        (2) 2M x 36   (2) 2M x 36    (2) 2M x 36    (2) 2M x 36

     64MB        (2) 8M x 36       None           None           None

     64MB        (2) 4M x 36   (2) 4M x 36        None           None

     72MB        (2) 8M x 36   (2) 1M x 36        None           None

     80MB        (2) 8M x 36   (2) 2M x 36        None           None

     96MB        (2) 8M x 36   (2) 4M x 36        None           None

     96MB        (2) 4M x 36   (2) 4M x 36    (2) 4M x 36        None

     128MB       (2) 16M x 36      None           None           None

     128MB       (2) 8M x 36   (2) 8M x 36        None           None

     128MB       (2) 4M x 36   (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

                        SIMM CONFIGURATION (CON’T)

     Size          Bank 0         Bank 1         Bank 2         Bank 3

     136MB       (2) 16M x 36  (2) 1M x 36        None           None

     144MB       (2) 16M x 36  (2) 2M x 36        None           None

     152MB       (2) 16M x 36  (2) 1M x 36    (2) 1M x 36    (2) 1M x 36

     160MB       (2) 16M x 36  (2) 4M x 36        None           None

     176MB       (2) 16M x 36  (2) 2M x 36    (2) 2M x 36    (2) 2M x 36

     192MB       (2) 16M x 36  (2) 8M x 36        None           None

     192MB       (2) 8M x 36   (2) 8M x 36    (2) 8M x 36        None

     224MB       (2) 16M x 36  (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

     256MB       (2) 32M x 36      None           None           None

     256MB       (2) 16M x 36  (2) 16M x 36       None           None

     256MB       (2) 8M x 36   (2) 8M x 36    (2) 8M x 36    (2) 8M x 36

  Note: Board accepts EDO memory.

                  CACHE CONFIGURATION

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

                        VIDEO MEMORY CONFIGURATION

            Note: 1MB video memory is factory installed and is not
            configurable. To increase to 2MB, install upgrade module at
            CN9.

                            CPU SPEED SELECTION

    CPU     Clock    Multiplier   SW1/1    SW1/2   SW1/3   SW1/4   SW1/8
  speed     speed

  233MHz    66MHz       3.5x       On      Off     Off      On       On

  266MHz    66MHz        4x        On       On      On      Off      On

  300MHz    66MHz       4.5x       On      Off      On      Off      On

  333MHz    66MHz        5x        On       On     Off      Off      On

  366MHz    66MHz       5.5x       On      Off     Off      Off      On

  400MHz    66MHz        6x        On       On      On      On      Off

[Image]

                                CONNECTIONS

  Purpose                     Location     Purpose              Location

  Logic board connectors         CN1       Chassis fan power      CN8

  Power connector                CN2       5v power               CN9
                                           connector

  IDE interface 1                CN3       Game/MIDI port         CN10

  IDE interface 2                CN4       Audio in – CD-ROM      CN11

  Floppy drive interface         CN5       Audio connector        CN12

  100Base-T connector            CN6       32-bit PCI slots    PC1 – PC3

  10Base-T/10Base-2              CN7
  connector