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