UNITRON COMPUTER, INC.

486SX-25

Processor         80486SX
Processor Speed   25MHz
Chip Set          UMC
Max. Onboard DRAM 32MB
Cache             None
BIOS              Phoenix
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            J3       Turbo LED                   J11

  Reset switch                J9       Speaker                     J12

  Turbo switch                J10      Power LED & keylock         J13

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                J4            pins 2 & 3
                                                              closed

      Monitor type select monochrome           J4            pins 1 & 2
                                                              closed

  »   Factory configured - do not alter        J8               N/A

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      17MB        (4) 4M x 9     (4) 256K x 9

      20MB        (4) 4M x 9      (4) 1M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

                          CPU TYPE CONFIGURATION

       Type               J5                 J6                 J7

     80486SX           pins 2 & 3        pins 2 & 3            Open
                        closed             closed

     80487SX           pins 1 & 2        pins 1 & 2         pins 2 & 3
                        closed             closed             closed

     80486DX           pins 1 & 2        pins 1 & 2         pins 1 & 2
                        closed             closed             closed