
COMPAQ COMPUTER CORPORATION

DESKPRO EP (2 DIMM)

Device Type         Mainboard
Processor           Pentium II/Celeron
Processor Speed     233/266/300/333/366/400/450/500MHz
Chip Set            Intel 440BX/PIIX-4E or 440EX/PIIX-4E
Video Chip Set      None
Maximum Onboard     256MB (SDRAM supported)
Memory
Maximum Video       None
Memory
Cache               512KB (located on Pentium II CPU)
BIOS                Unidentified
Dimensions          305mm x 244mm
I/O Options         32-bit PCI slots (3), floppy drive interface, IDE
                    interfaces (2), serial ports (2), parallel port, PS/2
                    mouse port, USB connectors (2), ATX power connector,
                    AGP slot
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  AGP slot                   AGP       Auxiliary LED             CR114

  ATX power connector        ATX       Power switch & LED          P5

  Serial port                CN1       Chassis fan power           P8

  Serial port                CN2       Wake on LAN connector       P9

  Parallel port              CN3       Floppy drive               P10
                                       interface

  PS/2 mouse port            CN4       IDE interface 1            P20

  USB connector              CN5       IDE interface 2            P21

  USB connector              CN6       32-bit PCI slots         PC1  PC4

                        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

      8MB         (1) 1M x 64        None

      16MB        (1) 2M x 64        None

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

      24MB        (1) 2M x 64     (1) 1M x 64

      32MB        (1) 4M x 64        None

      32MB        (1) 2M x 64     (1) 2M x 64

      40MB        (1) 4M x 64     (1) 1M x 64

      48MB        (1) 4M x 64     (1) 2M x 64

      64MB        (1) 8M x 64        None

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

      72MB        (1) 8M x 64     (1) 1M x 64

      80MB        (1) 8M x 64     (1) 2M x 64

     128MB       (1) 16M x 64        None

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

     136MB       (1) 16M x 64     (1) 1M x 64

     144MB       (1) 16M x 64     (1) 2M x 64

     160MB       (1) 16M x 64     (1) 4M x 64

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

            Note: Board accepts SDRAM memory.

                  CACHE CONFIGURATION

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

                            CPU SPEED SELECTION

    CPU       Clock    Multiplier     SW1/2    SW1/3     SW1/4     SW1/5
   speed     speed

  233MHz     66MHz        3.5x         Off      Off       On        On

  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

