UNIDENTIFIED
404 386SX
| Processor | 80386SX | 
| Processor Speed | 16/20/25MHz | 
| Chip Set | ALI | 
| Video Chip Set | None | 
| Maximum Onboard Memory | 8MB | 
| Maximum Video Memory | None | 
| Cache | None | 
| BIOS | AMI | 
| Dimensions | 254mm x 218mm | 
| I/O Options | None | 
| NPU Options | 80387SX | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| External battery | J1 | Power LED & keylock | J20 | 
| Reset switch | J18 | Turbo LED | J21 pins 1 & 2 | 
| Speaker | J19 | Turbo switch | J21 pins 4 & 5 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| Fast A20 gate signal from chip set | J4 | Pins 1 & 2 closed | |
| Fast A20 gate signal from keyboard controller | J4 | Pins 2 & 3 closed | |
| Monitor type select color | JP1 | Pins 2 & 3 closed | |
| Monitor type select monochrome | JP1 | Pins 1 & 2 closed | |
| DRAM CONFIGURATION | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 512KB | (2) 256K x 9 | None | None | None | 
| 1MB | (2) 256K x 9 | (2) 256K x 9 | None | None | 
| 1.5MB | (2) 256K x 9 | (2) 256K x 9 | (2) 256K x 9 | None | 
| 2MB | (2) 256K x 9 | (2) 256K x 9 | (2) 256K x 9 | (2) 256K x 9 | 
| 2MB | (2) 1M x 9 | None | None | None | 
| 4MB | (2) 1M x 9 | (2) 1M x 9 | None | None | 
| 6MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | None | 
| 8MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | 
| CPU SPEED SELECTION | ||
| Speed | J3 | J5 | 
| 16MHz | Pins 1 & 2 closed | Pins 1 & 2 closed | 
| 20MHz | Pins 1 & 2 closed | Pins 2 & 3 closed | 
| 25MHz | Pins 2 & 3 closed | Pins 2 & 3 closed |