COMPAQ COMPUTER CORPORATION

PROFESSIONAL WORKSTATION 5100

Device Type                Mainboard
Processor                  Pentium II
Processor Speed            266/300MHz
Chip Set                   Unidentified
Video Chip Set             None
Maximum Onboard Memory     2GB (EDO supported)
Maximum Video Memory       None
Cache                      256/512KB (located on Pentium II CPU)
BIOS                       Unidentified
Dimensions                 254mm x 218mm
I/O Options                Ethernet BNC connector, Ethernet 10BaseT
                           connector, floppy drive interface, IDE
                           interface, SCSI interface, Wide Ultra SCSI
                           interface, parallel port, PS/2 mouse port,
                           serial ports (2), riser slot, VRM connectors
                           (2), USB connectors (2), ATX power connector,
                           line in, line out, microphone in, headphone
                           connector
NPU Options                None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  ATX power                 ATX        Serial port 1            CN11
  connector

  Power switch &            C1         Parallel port            CN12
  LEDs

  Line in                   CN1        Ultra Wide SCSI          CN13
                                       interface

  Line out                  CN2        PS/2 mouse port          CN14

  Microphone in             CN3        Floppy drive             CN15
                                       interface

  Headphone                 CN4        SCSI interface           CN16
  connector

  USB connector 1           CN5        IDE interface            CN17

  USB connector 2           CN6        External battery      J21/pins 1 -
                                                                  4

  Ethernet 10BaseT          CN7        Riser slot                SL1
  connector

  Ethernet BNC              CN8        VRM connector            VRM1
  connector

  Serial port 2            CN10        VRM connector            VRM2

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

  »   Factory configured - do not           CN9          Unidentified
      alter

  »   Battery type select internal          J21        Pins 6 & 7 closed

      Battery type select external          J21        Pins 5 & 6 closed

  »   Password enabled                     SW1/1              Off

      Password disabled                    SW1/1              On

              DIMM CONFIGURATION

      Size          Bank 0          Bank 1

      64MB        (4) 2M x 64        None

     128MB        (4) 4M x 64        None

     128MB        (4) 2M x 64    (4) 2M x 64

     192MB        (4) 4M x 64    (4) 2M x 64

     256MB        (4) 8M x 64        None

     256MB        (4) 4M x 64    (4) 4M x 64

     320MB        (4) 8M x 64    (4) 2M x 64

     384MB        (4) 8M x 64    (4) 4M x 64

     512MB        (4) 16M x 64       None

     512MB        (4) 8M x 64    (4) 8M x 64

     576MB        (4) 16M x 64   (4) 2M x 64

     640MB        (4) 16M x 64   (4) 4M x 64

     768MB        (4) 16M x 64   (4) 8M x 64

     1024MB       (4) 32M x 64       None

          DIMM CONFIGURATION (CON’T)

      Size          Bank 0          Bank 1

     1024MB       (4) 16M x 64   (4) 16M x 64

     1088MB       (4) 32M x 64   (4) 2M x 64

     1152MB       (4) 32M x 64   (4) 4M x 64

     1280MB       (4) 32M x 64   (4) 8M x 64

     1536MB       (4) 32M x 64   (4) 16M x 64

     2048MB       (4) 32M x 64   (4) 32M x 64

  Note: Board accepts EDO memory.

                     CACHE CONFIGURATION

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

                            CPU SPEED SELECTION

    CPU     Clock    Multiplier   SW1/2    SW1/3   SW1/4   SW1/5   SW1/6
  speed     speed

  266MHz    66MHz        4x        Off      On      On      Off     Off

  300MHz    66MHz       4.5x       Off      On     Off      Off     Off