NEC TECHNOLOGIES, INC.
POWERMATE 425/433/466
Processor | 80486SX/80487DX/80486DX/80486DX2 |
Processor Speed | 25/33/50(internal)/66(internal)MHz |
Chip Set | C & T |
Max. Onboard DRAM | 64MB |
Cache | NONE |
BIOS | NEC |
Dimensions | 330mm x 218mm |
I/O Options | Floppy drive interface, IDE interface, multifunction connector (PS/2 mouse, PS/2 keyboard, power LED), parallel port, proprietary ISA riser card slot, serial port, VGA port |
NPU Options | None |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Proprietary riser card connector | JA-1 | Speaker | JP11 |
Floppy drive interface | J1 | Mutifunction connector | P1 |
IDE interface | J2 | Parallel port | P2 |
IDE interface LED | JP6 | Serial port | P3 |
External battery | JP9 | VGA port | P4 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper/Switch | Position | |
| » | Parallel port (P2) select LPT1/IRQ7 (378-37Fh) | JP13 | pins 1 & 2 closed |
Parallel port (P2) select LPT1/IRQ5 (278-27Fh) | JP13 | pins 2 & 3 closed | |
| » | Flash BIOS programmable via network disabled | JP14 | pins 1 & 2 closed |
Flash BIOS programmable via network enabled | JP14 | pins 2 & 3 closed | |
| » | Onboard video enabled | SW1/1 | Off |
Onboard video disabled | SW1/1 | On | |
| » | Floppy interface (J1) enabled | SW1/2 | Off |
Floppy interface (J1) disabled | SW1/2 | On | |
| » | System password enabled | SW1/3 | Off |
System password disabled & cleared | SW1/3 | On | |
| » | Flash BIOS write enabled | SW1/4 | Off |
Flash BIOS write disabled | SW1/4 | On | |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
4MB | (1) 1M x 36 | NONE | NONE | NONE |
5MB | (1) 1M x 36 | (1) 256K x 36 | NONE | NONE |
6MB | (1) 1M x 36 | (1) 256K x 36 | (1) 256K x 36 | NONE |
7MB | (1) 1M x 36 | (1) 256K x 36 | (1) 256K x 36 | (1) 256K x 36 |
8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
9MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x 36 | NONE |
10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x 36 | (1) 256K x 36 |
12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | NONE |
13MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x 36 |
16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
16MB | (1) 4M x 36 | NONE | NONE | NONE |
17MB | (1) 4M x 36 | (1) 256K x 36 | NONE | NONE |
18MB | (1) 4M x 36 | (1) 256K x 36 | (1) 256K x 36 | NONE |
19MB | (1) 4M x 36 | (1) 256K x 36 | (1) 256K x 36 | (1) 256K x 36 |
20MB | (1) 4M x 36 | (1) 1M x 36 | NONE | NONE |
21MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x 36 | NONE |
22MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x 36 | (1) 256K x 36 |
24MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x 36 | NONE |
25MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x 36 |
28MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
33MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x 36 | NONE |
34MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x 36 | (1) 256K x 36 |
36MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x 36 | NONE |
37MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x 36 |
40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x 36 |
48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | NONE |
49MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x 36 |
52MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x 36 |
64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
CPU TYPE CONFIGURATION | |||
Type | JP1 | JP2 | JP12 |
80486SX PQFP | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
80486SX PGA | pins 2 & 3 closed | pins 2 & 3 closed | pins 2 & 3 closed |
80487SX PGA | pins 1 & 2 closed | pins 1 & 2 closed | pins 1 & 2 closed |
80486DX PGA | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
80486DX2 PGA | pins 1 & 2 closed | pins 1 & 2 closed | pins 2 & 3 closed |
CPU SPEED CONFIGURATION | |
Clock Speed | JP15 |
25/50i MHz | pins 1 & 2 closed |
33/66i MHz | pins 2 & 3 closed |