
ELITEGROUP COMPUTER SYSTEMS, INC.

UM 486 II/486SX II

Processor         80486SX/80487SX/80486DX
Processor Speed   16/20/25/33/50MHz
Chip Set          UMC
Max. Onboard DRAM 32MB
Cache             64/128/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            J1       Reset switch                J4

  Turbo LED                   J2       Speaker                     J5

  Turbo switch                J3       Power LED & keylock         J6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color               JP21          pins 2 & 3
                                                              closed

      Monitor type select monochrome          JP21          pins 1 & 2
                                                              closed

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

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

      16MB        (4) 4M x 9         NONE

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

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8

     128KB      (4) 32K x 8        NONE       (1) 8K x 8

     256KB      (4) 32K x 8    (4) 32K x 8    (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

  Size     JP6      JP7       JP8      JP9     JP10   JP11    JP16   JP17

  64KB     Open     Open     Open     Open      1 &    1 &    Open   1 &
                                                2      2              2

  128KB   Closed    Open     Closed   Open      2 &    1 &    1 &    2 &
                                                3      2       2      3

  256KB   Closed   Closed    Closed   Closed    2 &    2 &    2 &    1 &
                                                3      3       3      2

  Note:Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

     Type           JP2            JP3            JP5            JP20

    80486SX         Open        pins 2 & 3     pins 1 & 2        Open
                                  closed         closed

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

    80486DX        Closed       pins 1 & 2     pins 1 & 2        Open
                                  closed         closed

