NEC TECHNOLOGIES, INC.

PowerMate Express 486/50e

Processor                80486DX
Processor Speed          50MHz
Chip Set                 Intel
Max. Onboard DRAM        16MB
SRAM Cache               128KB (on CPU module)
BIOS                     NEC (Flash EEPROM)
Dimensions               330.2mm x 218.4mm
I/O Options              Proprietary CPU module slot, keyboard/bus mouse
                         interface,

                         serial ports (2), parallel port, video port,
                         proprietary video card sockets,

                         32-bit external memory card slot, IDE interface,
                         floppy drive interface
NPU Options              None

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                  Location

  Proprietary CPU           J6        Video port                  P6
  module

  32-bit external           J7        Keyboard/Bus mouse          P7
  memory card                         interface

  Proprietary video      J8, J9, &    Fan power                   P8
  card                      J10

  IDE interface             P1        IDE interface LED           P9

  Floppy drive              P2        External battery           P10
  interface

  Parallel port             P3        Power supply            P11 & P12

  Serial port (COM1)        P4        Drive power                P13

  Serial port (COM2)        P5        Drive power                P14

                        USER CONFIGURABLE SETTINGS

              Function                   Jumper/Switch        Position

  »   Password enabled                        3F1            Pins 2 & 3
                                                               closed

      Password disabled                       3F1            Pins 1 & 2
                                                               closed

  »   Test mode disabled                     10A1               Open

      Test mode enabled                      10A1              Closed

  »   I/O recovery disabled                  11B5               Open

      I/O recovery enabled                   11B5              Closed

  »   NEC VGA adapter disabled (U.S.         15A1               Open
      setting)

      NEC VGA adapter enabled                15A1              Closed

  »   Parallel port (P3)                     15C3            Pins 1 & 2
      configuration LPT1/IRQ7,                              closed Pins 5
      LPT2/IRQ5                                              & 6 closed

      Parallel port (P3)                     15C3            Pins 2 & 3
      configuration LPT1/IRQ5,                              closed Pins 4
      LPT2/IRQ7                                              & 5 closed

  »   Manufacturing test loop                15K1              Closed
      disabled

      Manufacturing test loop                15K1               Open
      enabled

  »   BIOS flash reprogramming               17H1            Pins 2 & 3
      disabled                                                 closed

      BIOS flash reprogramming               17H1            Pins 1 & 2
      enabled                                                  closed

  »   ROM type select 27C256                 18F1            Pins 1 & 2
      (28F256)                                                 closed

      ROM type select 27C512                 18F1            Pins 2 & 3
      (28F512)                                                 closed

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

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

       8MB         (2) 1M x 36          NONE

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

                            SRAM CONFIGURATION

  Notes:The CPU card comes standard with 128KB of cache and is not
  alterable. The locations of the cache chips are unknown.