
HEWLETT-PACKARD COMPANY

HP VECTRA 486S/20

Processor             80486SX/80487SX
Processor Speed       20MHz
Chip Set              HP
Max. Onboard DRAM     64MB
Cache                 8KB
BIOS                  Unidentified
Dimensions            330mm x 218mm
I/O Options           Mouse port, floppy drive interface, IDE interface,
                      parallel port, serial ports (2)
NPU Options           None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Mouse port                  CN1      External battery            J1

  Parallel port               CN2      IDE interface LED           J2

  Serial port 1               CN3      Speaker                     J3

  Serial port 2               CN4      Control panel               J4
                                       connector

  Floppy drive interface      CN6

                        USER CONFIGURABLE SETTINGS

                Function                    Switch          Position

      BIOS write protect enabled              SW1           "Locked"

      BIOS write protect disabled             SW1          "Unlocked"

     CMOS normal operation                  SW2/1             Off

      CMOS memory clear                      SW2/1             On

     Do not erase power-on password         SW2/2             Off
      in CMOS

      Erase power-on password in CMOS        SW2/2             On

     Lock EISA configuration settings       SW2/3             On

      Unlock EISA configuration              SW2/3             Off
      settings

                            DRAM CONFIGURATION

    Size         Bank 0          Bank 1         Bank 2          Bank 3

     2MB        (2) 256K x        NONE           NONE            NONE
                   36

     4MB       (2) 512KB x        NONE           NONE            NONE
                   36

     4MB        (2) 256K x     (2) 256K x        NONE            NONE
                   36              36

     6MB        (2) 256K x     (2) 256K x      (2) 256K x        NONE
                   36              36             36

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

     8MB       (2) 512KB x     (2) 512KB x       NONE            NONE
                   36              36

     8MB       (2) 1M x 36        NONE           NONE            NONE

    10MB       (2) 1M x 36        NONE         (2) 256K x        NONE
                                                  36

    12MB       (2) 1M x 36        NONE        (2) 512KB x        NONE
                                                  36

    16MB       (2) 2M x 36        NONE           NONE            NONE

    16MB       (2) 1M x 36    (2) 1M x 36        NONE            NONE

    18MB       (2) 1M x 36    (2) 1M x 36      (2) 256K x        NONE
                                                  36

    18MB       (2) 2M x 36        NONE         (2) 256K x        NONE
                                                  36

    20MB       (2) 2M x 36        NONE         (2) 512K x        NONE
                                                  36

    20MB       (2) 2M x 36        NONE         (2) 256K x     (2) 256K x
                                                  36              36

    24MB       (2) 1M x 36    (2) 1M x 36     (2) 1M x 36        NONE

    24MB       (2) 2M x 36     (2) 512K x      (2) 512K x        NONE
                                   36             36

    24MB       (2) 2M x 36        NONE        (2) 1M x 36        NONE

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

    32MB       (2) 2M x 36    (2) 1M x 36     (2) 1M x 36        NONE

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

    34MB       (2) 2M x 36     (2) 256K x        NONE            NONE
                                   36

    36MB       (2) 2M x 36     (2) 512K x        NONE            NONE
                                   36

    36MB       (2) 2M x 36     (2) 256K x      (2) 256K x        NONE
                                   36             36

    40MB       (2) 2M x 36    (2) 2M x 36      (2) 512K x     (2) 512K x
                                                  36              36

                     DRAM CONFIGURATION (CONTINUED)

     Size         Bank 0         Bank 1         Bank 2        Bank 3

     40MB       (2) 2M x 36   (2) 2M x 36    (2) 1M x 36       NONE

     48MB       (2) 2M x 36   (2) 2M x 36    (2) 1M x 36    (2) 1M x 36

     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

