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# NEC TECHNOLOGIES, INC.
PowerMate Image 486SX/25i, 486/33i
Processor 80486SX/80486DX
Processor Speed 25/33MHz
Chip Set OPTI
Max. Onboard 36MB
DRAM
Cache 64/128KB (on optional cache module)
BIOS NEC (Flash EEPROM)
Dimensions 330mm x 218mm
I/O Options Bus mouse port, floppy drive interface,
headphone jack, IDE interface, microphone
jack, parallel port, proprietary cache module
socket, proprietary VGA feature card socket,
serial ports (2), VGA port
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Proprietary cache | CA1 | External battery | JP8 |
| module | | | |
|-------------------+----------+------------------+----------|
| Floppy drive | J1 | Parallel port | P1 |
| interface | | | |
|-------------------+----------+------------------+----------|
| IDE interface | J2 | Serial port 1 | P2 |
|-------------------+----------+------------------+----------|
| Proprietary VGA | J3 | VGA port | P4 |
| feature card | | | |
|-------------------+----------+------------------+----------|
| Drive power | J6 | Serial port 2 | P5 |
| | | (optional) | |
|-------------------+----------+------------------+----------|
| IDE interface LED | JP2 | Indicator panel | P6 |
| (not used) | | assembly | |
|-------------------+----------+------------------+----------|
| Speaker (not | JP6 | Riser Card | R1 |
| used) | | | |
|------------------------------------------------------------|
| Note: The bus mouse port, headphone jack, and microphone |
| jack are connected to the main board via the indicator |
| panel assembly connector (P6). |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Parallel port (P1) | JP7 | pins 2 & 3 |
| | interrupt select IRQ7 | | closed |
|---+---------------------------+---------------+------------|
| | Parallel port (P1) | JP7 | pins 1 & 2 |
| | interrupt select IRQ5 | | closed |
|---+---------------------------+---------------+------------|
| » | | JP9 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | CPU type select | JP9 | pins 2 & 3 |
| | 80486DX/33MHz | | closed |
|---+---------------------------+---------------+------------|
| » | On board video enabled | SW1/1 | Off |
|---+---------------------------+---------------+------------|
| | On board video disabled | SW1/1 | On |
|---+---------------------------+---------------+------------|
| » | Floppy drive interface | SW1/2 | Off |
| | enabled | | |
|---+---------------------------+---------------+------------|
| | Floppy drive interface | SW1/2 | On |
| | disabled | | |
|---+---------------------------+---------------+------------|
| » | Password enabled | SW1/3 | Off |
|---+---------------------------+---------------+------------|
| | Password disabled | SW1/3 | On |
|---+---------------------------+---------------+------------|
| » | BIOS flash reprogramming | SW1/4 | Off |
| | enabled | | |
|---+---------------------------+---------------+------------|
| | BIOS flash reprogramming | SW1/4 | On |
| | disabled | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW2 | Open |
| | not alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|-----------+-------------+-----------------+----------------|
| 4MB | 4MB | NONE | NONE |
|-----------+-------------+-----------------+----------------|
| 8MB | 4MB | (4) 1M x 9 | NONE |
|-----------+-------------+-----------------+----------------|
| 12MB | 4MB | (4) 1M x 9 | (4) 1M x 9 |
|-----------+-------------+-----------------+----------------|
| 20MB | 4MB | (4) 4M x 9 | NONE |
|-----------+-------------+-----------------+----------------|
| 24MB | 4MB | (4) 1M x 9 | (4) 4M x 9 |
|-----------+-------------+-----------------+----------------|
| 36MB | 4MB | (4) 4M x 9 | (4) 4M x 9 |
|------------------------------------------------------------|
| Note: Bank 0 is factory installed and is not configurable. |
| The location of bank 0 is unidentified. |
+------------------------------------------------------------+