
COMPAQ COMPUTER CORPORATION

DESKPRO EN

Device Type         Mainboard
Processor           Pentium II
Processor Speed     266/300/333/350/400/450/500/550MHz
Chip Set            Intel
Video Chip Set      None
Maximum Onboard     384MB (SDRAM supported)
Memory
Maximum Video       None
Memory
Cache               512KB (located on Pentium II CPU)
BIOS                Unidentified
Dimensions          254mm x 218mm
I/O Options         32-bit PCI slots (4), riser slot, AGP slot, serial
                    ports (2), parallel port, PS/2 mouse port, line in,
                    line out, microphone in, headphone in, USB connectors
                    (2), IDE interfaces (2), floppy drive interface, audio
                    in  CD-ROM
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                  Location   Purpose                    Location

  AGP slot                   AGP      Microphone in                CN7

  Serial port                CN1      Headphone in                 CN8

  Serial port                CN2      USB connector                CN9

  Parallel port              CN3      USB connector               CN10

  PS/2 mouse port            CN4      Chassis fan power            P15

  Line in                    CN5      Riser slot                   SL1

  Line out                   CN6

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     CMOS memory normal operation            E50           Pins 1 & 2
                                                              closed

      CMOS memory clear                       E50           Pins 2 & 3
                                                              closed

     Password enabled                       SW1/1             Off

      Password disabled                      SW1/1              On

      Auxiliary power supply enabled,        SW1/6             Off
      main power supply disabled

      Auxiliary & main power supply          SW1/6              On
      enabled

                    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

                  DIMM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1          Bank 2

      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

      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) 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

     136MB       (1) 16M x 64     (1) 1M x 64        None

     136MB        (1) 8M x 64     (1) 8M x 64    (1) 1M x 64

     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) 16M x 64     (1) 4M x 64        None

     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) 16M x 64     (1) 8M x 64        None

     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

                  CACHE CONFIGURATION

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

                            CPU SPEED SELECTION

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

  266MHz     66MHz         4x          On        On       Off       On

  300MHz     66MHz        4.5x         On       Off       Off       On

  333MHz     66MHz         5x          Off       On       Off       On

  350MHz     100MHz       3.5x         Off      Off       On        On

  400MHz     100MHz        4x          On        On       Off       On

  450MHz     100MHz       4.5x         On       Off       Off       On

  500MHz     100MHz        5x          Off       On       Off       On

  550MHz     100MHz       5.5x         Off      Off       Off       Off

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Speaker                     P6       SCSI interface LED         P29

  Chassis fan power           P8       32-bit PCI slots         PC1  PC4

  Wake on LAN connector       P9

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  ATX power connector         ATX      Floppy drive interface      P10

  Front panel connector       P5       IDE interface 1             P20

  Audio in  CD-ROM           P7       IDE interface 2             P21

