 Acer File Extensions |
Packard Bell 486T M/Board
Specification
- Battery : 3.6 V Lithium (Removable)
- BIOS : 128 KB - Phoenix BIOS V1.10.0915 (latest). To access (Ctrl)-(Alt)-(S).
- Cache : Write Back: 8 KB Internal (Level 1) Cache 128 KB Static Ram, 20ns
- CPU : Intel 486DX-25
- Interfaces :
- 1 DB-25 Parallel Port
- 1 DB-9 Serial Port
- 1 5-pin DIN Keyboard
- RAM : 4MB Standard on Motherboard. 16MB Maximum on Motherboard.
- Speaker : External on front chassis.
- Video : Oak adapter on expansion slot.
Jumpers
| Jumper | Function | Pins | Description |
|---|---|---|---|
| JP1 | FDC | 1-2 2-3 | * Enabled Disabled |
| JP2 | Display Mode | 1-2 | * Colour Monochrome |
| JP3 | IDE Interface | 1-2 2-3 | * Enabled Disabled |
Upgrades
- Cache : This system has 128Kb of cache memory. No additional cache can be added.
- CPU : The 486T motherboard uses 238 pin type 2 socket. The CPU may be replaced with the Intel Overdrive Processor.
- RAM :
- 4MB Standard on Motherboard.
- 16MB Maximum on Motherboard.
- No jumper setting required.
- Recommended SIMM speed is 80ns.
- This motherboard uses 30 pin SIMMs.
- Four identical SIMMs must be installed in one bank.
- Base Memory is 640Kb always. Shadow BIOS & Shadow Video take 128Kb each. (Comes off Extended Memory).
- Video Memory : This system has a 512k video card installed (PBSVGA). It can be upgraded by replacing the card with another video card.