HEWLETT-PACKARD COMPANY

HP VECTRA 486U PC Series

Processor         80486SX/80487SX/80486DX/80486DX2
Processor Speed   25/33/50(internal)/66(internal)MHz
Chip Set          HP
Max. Onboard DRAM 64MB
Cache             None
BIOS              HP
Dimensions        276mm x 325mm
I/O Options       Bus mouse port, floppy interface, IDE interface, serial
                  ports (2), parallel port, VGA port
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  VGA port                   CN1       Parallel port               CN4

  Serial port 2              CN2       Bus mouse port              CN5

  Serial port 1              CN3

                        USER CONFIGURABLE SETTINGS

                Function                     Switch          Position

  »   Factory configured - do not alter       SW1/2             Off

  »   Factory configured - do not alter       SW1/3             Off

  »   VGA port enabled                        SW1/4             Off

      VGA port disabled                       SW1/4             On

  »   CMOS memory normal operation            SW1/1             Off

      CMOS memory clear                       SW1/1             On

  »   Password check enabled                  SW1/2             Off

      Password check disabled (password       SW1/2             On
      clear)

  »   Security mode disabled (CMOS            SW1/3             Off
      setup may be changed)

      Security mode enabled (CMOS setup       SW1/3             On
      may not be changed)

  »   BIOS write protect enabled               SW4          position 2

      BIOS write protect disabled (BIOS        SW4          position 1
      may be upgraded from disk)

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

     12MB       (2) 512K x     (2) 512K x     (2) 512K x        NONE
                    36             36             36

     16MB       (2) 512K x     (2) 512K x     (2) 512K x    (2) 512K x 36
                    36             36             36

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

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

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

     28MB      (2) 2M x 36     (2) 512K x     (2) 512K x    (2) 512K x 36
                                   36             36

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

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

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

     48MB      (2) 2M x 36    (2) 2M x 36    (2) 2M x 36        NONE

     52MB      (2) 2M x 36    (2) 2M x 36    (2) 2M x 36    (2) 512K x 36

     64MB      (2) 2M x 36    (2) 2M x 36    (2) 2M x 36     (2) 2M x 36

                          CPU TYPE CONFIGURATION

        Type              SW3/1             SW3/2              SW3/3

   80487SX-25MHz           Off               Off                Off

   ODP486SX-50MHz          Off               Off                Off

   ODP486SX-66MHz          Off               Off                On

   80486DX-33MHz            On                On                On

   80486DX2-50MHz           On                On                Off

   80486DX2-66MHz           On                On                On

  Note:Install the 80487SX or ODP486SX processors in the Upgrade CPU
  socket.

    VRAM CONFIGURATION

    Size        Bank 0

    512KB        NONE

   1024KB     (4) 44256

  VRAM SWITCH CONFIGURATION

     Size           SW1/1

     512KB           Off

    1024KB           On