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# 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
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Speaker | P1 | Disk drive power | P6 |
| | | interface | |
|-------------------+----------+------------------+----------|
| LED controller | P2 | CPU slot | SL1 |
| board | | | |
|-------------------+----------+------------------+----------|
| Chassis fan power | P5 | External memory | SL2-SL3 |
| | | slots | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 24MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 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 | (2) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x | (2) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 34MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x | (2) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x | (2) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 38MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x | (2) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x | (2) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x | (2) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x | (2) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 50MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x | (2) 1M x |
| | | | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|---------+---------------+-----------+-----------+----------|
| 52MB | (2) 1M x 36 | (2) 1M x | (2) 1M x | (2) 1M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 64MB | (2) 4M x 36 | (2) 4M x | NONE | NONE |
| | | 36 | | |
|---------+---------------+-----------+-----------+----------|
| 64MB | (2) 4M x 36 | (2) 4M x | NONE | NONE |
| | | 36 | | |
|---------+---------------+-----------+-----------+----------|
| 64MB | (2) 4M x 36 | (2) 4M x | NONE | NONE |
| | | 36 | | |
|---------+---------------+-----------+-----------+----------|
| 72MB | (2) 4M x 36 | (2) 4M x | (2) 1M x | NONE |
| | | 36 | 36 | |
|---------+---------------+-----------+-----------+----------|
| 72MB | (2) 4M x 36 | (2) 4M x | (2) 1M x | NONE |
| | | 36 | 36 | |
|---------+---------------+-----------+-----------+----------|
| 80MB | (2) 4M x 36 | (2) 4M x | (2) 1M x | (2) 1M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 80MB | (2) 4M x 36 | (2) 4M x | (2) 1M x | (2) 1M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 82MB | (2) 4M x 36 | (2) 4M x | (2) 1M x | (2) 1M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 84MB | (2) 4M x 36 | (2) 4M x | (2) 1M x | (2) 1M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 86MB | (2) 4M x 36 | (2) 4M x | (2) 1M x | (2) 1M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 88MB | (2) 4M x 36 | (2) 4M x | (2) 1M x | (2) 1M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 88MB | (2) 4M x 36 | (2) 4M x | (2) 1M x | (2) 1M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 96MB | (2) 4M x 36 | (2) 4M x | (2) 4M x | NONE |
| | | 36 | 36 | |
|---------+---------------+-----------+-----------+----------|
| 96MB | (2) 4M x 36 | (2) 4M x | (2) 1M x | (2) 1M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 104MB | (2) 4M x 36 | (2) 4M x | (2) 1M x | (2) 1M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 112MB | (2) 4M x 36 | (2) 4M x | (2) 1M x | (2) 1M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 128MB | (2) 4M x 36 | (2) 4M x | (2) 4M x | (2) 4M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 160MB | (2) 4M x 36 | (2) 4M x | (2) 4M x | (2) 4M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 192MB | (2) 4M x 36 | (2) 4M x | (2) 4M x | (2) 4M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 224MB | (2) 4M x 36 | (2) 4M x | (2) 4M x | (2) 4M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 256MB | (2) 4M x 36 | (2) 4M x | (2) 4M x | (2) 4M x |
| | | 36 | 36 | 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 (CON’T) |
|------------------------------------------------------------|
| Size | Bank 4 | Bank 5 | Bank 6 | Bank 7 |
|---------+---------------+-----------+-----------+----------|
| 38MB | (2) 256K x 36 | (2) 256K | (2) 256K | NONE |
| | | x 36 | x 36 | |
|---------+---------------+-----------+-----------+----------|
| 40MB | (2) 1M x 36 | NONE | NONE | NONE |
|---------+---------------+-----------+-----------+----------|
| 40MB | (2) 256K x 36 | (2) 256K | (2) 256K | (2) 256K |
| | | x 36 | x 36 | x 36 |
|---------+---------------+-----------+-----------+----------|
| 48MB | (2) 1M x 36 | (2) 1M x | NONE | NONE |
| | | 36 | | |
|---------+---------------+-----------+-----------+----------|
| 50MB | (2) 1M x 36 | (2) 1M x | (2) 256K | NONE |
| | | 36 | x 36 | |
|---------+---------------+-----------+-----------+----------|
| 52MB | (2) 1M x 36 | (2) 1M x | (2) 256K | (2) 256K |
| | | 36 | x 36 | x 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 36 | NONE | NONE | NONE |
|---------+---------------+-----------+-----------+----------|
| 84MB | (2) 256K x 36 | (2) 256K | NONE | NONE |
| | | x 36 | | |
|---------+---------------+-----------+-----------+----------|
| 86MB | (2) 256K x 36 | (2) 256K | (2) 256K | NONE |
| | | x 36 | x 36 | |
|---------+---------------+-----------+-----------+----------|
| 88MB | (2) 1M x 36 | NONE | NONE | NONE |
|---------+---------------+-----------+-----------+----------|
| 88MB | (2) 256K x 36 | (2) 256K | (2) 256K | (2) 256K |
| | | x 36 | x 36 | x 36 |
|---------+---------------+-----------+-----------+----------|
| 96MB | NONE | NONE | NONE | NONE |
|---------+---------------+-----------+-----------+----------|
| 96MB | (2) 1M x 36 | (2) 1M x | NONE | NONE |
| | | 36 | | |
|---------+---------------+-----------+-----------+----------|
| 104MB | (2) 1M x 36 | (2) 1M x | (2) 1M x | NONE |
| | | 36 | 36 | |
|---------+---------------+-----------+-----------+----------|
| 112MB | (2) 1M x 36 | (2) 1M x | (2) 1M x | (2) 1M x |
| | | 36 | 36 | 36 |
|---------+---------------+-----------+-----------+----------|
| 128MB | NONE | NONE | NONE | NONE |
|---------+---------------+-----------+-----------+----------|
| 160MB | (2) 4M x 36 | NONE | NONE | NONE |
|---------+---------------+-----------+-----------+----------|
| 192MB | (2) 4M x 36 | (2) 4M x | NONE | NONE |
| | | 36 | | |
|---------+---------------+-----------+-----------+----------|
| 224MB | (2) 4M x 36 | (2) 4M x | (2) 4M x | NONE |
| | | 36 | 36 | |
|---------+---------------+-----------+-----------+----------|
| 256MB | (2) 4M x 36 | (2) 4M x | (2) 4M x | (2) 4M x |
| | | 36 | 36 | 36 |
|------------------------------------------------------------|
| Note: The orientation of Banks 0 & 1 are |
| unidentified. Banks 2 - 7 are located on external |
| memory cards. |
+------------------------------------------------------------+
IMG IMG 2
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
IMG IMG 3
IMG IMG 4
+------------------------------------------------------------+
| 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. |
+------------------------------------------------------------+