
HEWLETT-PACKARD COMPANY

HP VECTRA 500 MODEL 520 (TYPE A),

MODEL 525 (TYPE A)

Device Type             Mainboard
Processor               Pentium
Processor Speed         100/120/133/150/166MHz
Chip Set                Unidentified
Video Chip Set          Unidentified
Maximum Onboard Memory  192MB (EDO supported) Unified Memory Architecture
                        (UMA)
Cache                   256KB
BIOS                    Unidentified
Dimensions              275mm x 205mm
I/O Options             Floppy drive interface, IDE interfaces (2),
                        parallel port, PS/2 mouse port, serial ports (2),
                        cache slot
NPU Options             None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  3.3v power                  C1       PS/2 mouse port             CN5

  Status panel connector      C2       IDE interface 1             CN6

  Start connector             C3       IDE interface 2             CN7

  5v power                    C4       Floppy drive interface      CN8

  VGA port                    CN1      VGA feature connector       CN9

  Serial port 2               CN2      External battery            J1

  Serial port 1               CN3      Cache slot                  SL1

  Parallel port               CN4

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     Keyboard power down enabled             JP4             Closed

      Keyboard power down disabled            JP4              Open

     Flash BIOS enabled                     SW1/1             Off

      Flash BIOS disabled                    SW1/1              On

     CMOS memory normal operation           SW1/2             Off

      CMOS memory clear                      SW1/2              On

     Password normal operation              SW1/3             Off

      Password clear                         SW1/3              On

                      SIMM CONFIGURATION

      Size          Bank 0          Bank 1          Bank 2

      16MB        (2) 2M x 36        None            None

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

      32MB        (2) 4M x 36        None            None

      48MB        (2) 2M x 36     (2) 2M x 36    (2) 2M x 36

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

      64MB        (2) 8M x 36        None            None

      96MB        (2) 4M x 36     (2) 4M x 36    (2) 4M x 36

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

     128MB       (2) 16M x 36        None            None

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

                  SIMM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1          Bank 2

     160MB       (2) 16M x 36     (2) 2M x 36    (2) 2M x 36

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

     192MB       (2) 16M x 36     (2) 4M x 36    (2) 4M x 36

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

     192MB        (2) 8M x 36     (2) 8M x 36    (2) 8M x 36

            Note: Board accepts EDO memory.

                CACHE CONFIGURATION

           Size                      SL1

          256KB            256KB module installed

                        CACHE JUMPER CONFIGURATION

                   Type                                  J6

                 Synchronous                     Pins 2 & 3 closed

                 Asynchronous                     Pins 1 & 2 closed

                            CPU SPEED SELECTION

  CPU speed      Clock      Multiplier      J7       SW2/1        SW2/2
                 speed

   100MHz        66MHz         1.5x        3 & 4      Off          Off

   120MHz        60MHz          2x         1 & 3       On          Off

   133MHz        66MHz          2x         3 & 4       On          Off

   150MHz        60MHz         2.5x        1 & 3       On          On

   166MHz        66MHz         2.5x        3 & 4       On          On

  Note: Pins designated should be in the closed position.

