
NEC TECHNOLOGIES, INC.

POWERMATE EXPRESS 486SX/25TE, 486/33TE, 486/33TE(ENHANCED), 486/50TE,
486DX2/50TE, POM-2000 (NETT-2000)

Processor         80486SX/80486DX/80486DX2
Processor Speed   25/33/50(internal)/50MHz
Chip Set          Unidentified
Max. Onboard DRAM 256MB (224MB on external memory cards)
Cache             128KB (location unidentified)
BIOS              Unidentified
Dimensions        268mm x 224mm
I/O Options       External memory cards (2), CPU slot
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  Speaker                     P1        Disk drive power           P6
                                        interface

  LED controller board        P2        CPU slot                  SL1

  Chassis fan power           P5        External memory slots   SL2-SL3

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Test mode disabled (released             J1              Out
      position)

      Test mode enabled (locked                J1               In
      position)

     Factory configured - do not             JP1              Open
      alter

     BIOS type select 28256                  JP2           pins 1 & 2
                                                              closed

      BIOS type select 28512                  JP2           pins 2 & 3
                                                              closed

     Flash BIOS write enabled                JP3           pins 1 & 2
                                                              closed

      Flash BIOS write disabled               JP3           pins 2 & 3
                                                              closed

     Password enabled                        JP4           pins 1 & 2
                                                              closed

      Password disabled                       JP4           pins 2 & 3
                                                              closed

     Reset disabled                          JP5              Open

      Reset enabled                           JP5             Closed

                            DRAM CONFIGURATION

     Size         Bank 0        Bank 1         Bank 2          Bank 3

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

     16MB       (2) 1M x 36   (2) 1M x 36       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

     20MB       (2) 1M x 36   (2) 1M x 36     (2) 256K x    (2) 256K x 36
                                                 36

     22MB       (2) 1M x 36   (2) 1M x 36     (2) 256K x    (2) 256K x 36
                                                 36

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

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

     28MB       (2) 1M x 36   (2) 1M x 36     (2) 256K x    (2) 256K x 36
                                                 36

     32MB       (2) 4M x 36      NONE           NONE            NONE

     32MB       (2) 1M x 36   (2) 1M x 36    (2) 1M x 36     (2) 1M x 36

     32MB       (2) 1M x 36   (2) 1M x 36    (2) 1M x 36     (2) 1M x 36

     34MB       (2) 1M x 36   (2) 1M x 36    (2) 1M x 36     (2) 1M x 36

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

     38MB       (2) 1M x 36   (2) 1M x 36    (2) 1M x 36     (2) 1M x 36

     40MB       (2) 1M x 36   (2) 1M x 36    (2) 1M x 36     (2) 1M x 36

     40MB       (2) 1M x 36   (2) 1M x 36    (2) 1M x 36     (2) 1M x 36

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

     50MB       (2) 1M x 36   (2) 1M x 36    (2) 1M x 36     (2) 1M x 36

                        DRAM CONFIGURATION (CONT)

      Size          Bank 0        Bank 1         Bank 2         Bank 3

      52MB        (2) 1M x 36   (2) 1M x 36    (2) 1M x 36   (2) 1M x 36

      64MB        (2) 4M x 36   (2) 4M x 36       NONE           NONE

      64MB        (2) 4M x 36   (2) 4M x 36       NONE           NONE

      64MB        (2) 4M x 36   (2) 4M x 36       NONE           NONE

      72MB        (2) 4M x 36   (2) 4M x 36    (2) 1M x 36       NONE

      72MB        (2) 4M x 36   (2) 4M x 36    (2) 1M x 36       NONE

      80MB        (2) 4M x 36   (2) 4M x 36    (2) 1M x 36   (2) 1M x 36

      80MB        (2) 4M x 36   (2) 4M x 36    (2) 1M x 36   (2) 1M x 36

      82MB        (2) 4M x 36   (2) 4M x 36    (2) 1M x 36   (2) 1M x 36

      84MB        (2) 4M x 36   (2) 4M x 36    (2) 1M x 36   (2) 1M x 36

      86MB        (2) 4M x 36   (2) 4M x 36    (2) 1M x 36   (2) 1M x 36

      88MB        (2) 4M x 36   (2) 4M x 36    (2) 1M x 36   (2) 1M x 36

      88MB        (2) 4M x 36   (2) 4M x 36    (2) 1M x 36   (2) 1M x 36

      96MB        (2) 4M x 36   (2) 4M x 36    (2) 4M x 36       NONE

      96MB        (2) 4M x 36   (2) 4M x 36    (2) 1M x 36   (2) 1M x 36

     104MB        (2) 4M x 36   (2) 4M x 36    (2) 1M x 36   (2) 1M x 36

     112MB        (2) 4M x 36   (2) 4M x 36    (2) 1M x 36   (2) 1M x 36

     128MB        (2) 4M x 36   (2) 4M x 36    (2) 4M x 36   (2) 4M x 36

     160MB        (2) 4M x 36   (2) 4M x 36    (2) 4M x 36   (2) 4M x 36

     192MB        (2) 4M x 36   (2) 4M x 36    (2) 4M x 36   (2) 4M x 36

     224MB        (2) 4M x 36   (2) 4M x 36    (2) 4M x 36   (2) 4M x 36

     256MB        (2) 4M x 36   (2) 4M x 36    (2) 4M x 36   (2) 4M x 36

            Note: The orientation of Banks 0 & 1 are unidentified. Banks
            2 - 7 are located on external memory cards.

                            DRAM CONFIGURATION

     Size         Bank 4         Bank 5         Bank 6         Bank 7

     8MB           NONE           NONE           NONE           NONE

     16MB          NONE           NONE           NONE           NONE

     16MB          NONE           NONE           NONE           NONE

     18MB          NONE           NONE           NONE           NONE

     20MB          NONE           NONE           NONE           NONE

     22MB        (2) 256K x       NONE           NONE           NONE
                    36

     24MB          NONE           NONE           NONE           NONE

     24MB          NONE           NONE           NONE           NONE

     28MB        (2) 256K x    (2) 256K x     (2) 256K x    (2) 256K x 36
                    36             36             36

     32MB          NONE           NONE           NONE           NONE

     32MB          NONE           NONE           NONE           NONE

     32MB          NONE           NONE           NONE           NONE

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

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

                        DRAM CONFIGURATION (CONT)

     Size          Bank 4         Bank 5        Bank 6          Bank 7

     38MB        (2) 256K x     (2) 256K x     (2) 256K x        NONE
                     36             36            36

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

     40MB        (2) 256K x     (2) 256K x     (2) 256K x     (2) 256K x
                     36             36            36              36

     48MB       (2) 1M x 36    (2) 1M x 36       NONE            NONE

     50MB       (2) 1M x 36    (2) 1M x 36     (2) 256K x        NONE
                                                  36

     52MB       (2) 1M x 36    (2) 1M x 36     (2) 256K x     (2) 256K x
                                                  36              36

     64MB           NONE           NONE          NONE            NONE

     64MB           NONE           NONE          NONE            NONE

     64MB           NONE           NONE          NONE            NONE

     72MB           NONE           NONE          NONE            NONE

     72MB           NONE           NONE          NONE            NONE

     80MB           NONE           NONE          NONE            NONE

     80MB           NONE           NONE          NONE            NONE

     82MB        (2) 256K x        NONE          NONE            NONE
                     36

     84MB        (2) 256K x     (2) 256K x       NONE            NONE
                     36             36

     86MB        (2) 256K x     (2) 256K x     (2) 256K x        NONE
                     36             36            36

     88MB       (2) 1M x 36        NONE          NONE            NONE

     88MB        (2) 256K x     (2) 256K x     (2) 256K x     (2) 256K x
                     36             36            36              36

     96MB           NONE           NONE          NONE            NONE

     96MB       (2) 1M x 36    (2) 1M x 36       NONE            NONE

     104MB      (2) 1M x 36    (2) 1M x 36    (2) 1M x 36        NONE

     112MB      (2) 1M x 36    (2) 1M x 36    (2) 1M x 36    (2) 1M x 36

     128MB          NONE           NONE          NONE            NONE

     160MB      (2) 4M x 36        NONE          NONE            NONE

     192MB      (2) 4M x 36    (2) 4M x 36       NONE            NONE

     224MB      (2) 4M x 36    (2) 4M x 36    (2) 4M x 36        NONE

     256MB      (2) 4M x 36    (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

            Note: The orientation of Banks 0 & 1 are unidentified. Banks
            2 - 7 are located on external memory cards.

[Image]

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

     Test mode disabled                     15A2           pins 1 & 2
                                                              closed

      Test mode enabled                      15A2           pins 2 & 3
                                                              closed

     Test mode disabled                     15A3           pins 1 & 2
                                                              closed

      Test mode enabled                      15A3           pins 2 & 3
                                                              closed

[Image]

[Image]

                       MISCELLANEOUS TECHNICAL NOTE

            Note: The 486/33TE (enhanced) board has the same orientation
            as the 486/33TE. The 486DX2/50TE board has the same
            orientation as the 486/50TE.

