IBM CORPORATION
APTIVA 2153 SL-A
| Device Type | Mainboard | 
| Processor | AM K6-2/AM K6S | 
| Processor Speed | 300/350MHz | 
| Chip Set | Unidentified | 
| Video Chip Set | ATI | 
| Maximum Onboard Memory | 256MB (SDRAM supported) | 
| Maximum Video Memory | 4MB | 
| Cache | 512KB | 
| BIOS | Unidentified | 
| Dimensions | 254mm x 218mm | 
| I/O Options | 32-bit PCI slot, floppy drive interface, game/MIDI port, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA port, IR connector, USB connectors (2), ATX power connector, line in, line out, microphone in, audio in – CD-ROM | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| ATX power connector | ATX | Serial port 1 | CN8 | 
| USB connector 1 | CN1 | Wake on modem connector | CN9 | 
| USB connector 2 | CN1A | IDE interface 2 | CN10 | 
| Power LED | CN2/pins 1 – 3 | IDE interface 1 | CN11 | 
| IDE interface LED | CN2/pins 4 – 7 | Floppy drive interface | CN12 | 
| Reset switch | CN2/pins 8 & 9 | Game/MIDI port | CN13 | 
| Soft off power supply | CN2/pins 10 & 20 | Line in | CN13B | 
| Turbo LED | CN2/pins 11 – 13 | Line out | CN13C | 
| IR connector | CN2/pins 14 - 19 | Microphone in | CN13A | 
| PS/2 mouse port | CN3 | Modem connector | CN14 | 
| AMC connector | CN5 | Audio in – CD-ROM | CN15 | 
| Parallel port | CN6 | CPU fan power | FN1 | 
| VGA port | CN6A | 32-bit PCI slot | PC1 | 
| Serial port 2 | CN6B | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Factory configured - do not alter | C1 | Unidentified | 
| » | Factory configured - do not alter | C2 | Unidentified | 
| » | Factory configured - do not alter | C3 | Unidentified | 
| » | Factory configured - do not alter | C4 | Unidentified | 
| » | Factory configured - do not alter | C5 | Unidentified | 
| » | Factory configured - do not alter | FN2 | Unidentified | 
| » | VGA IRQ disabled | JP1 | Pins 1 & 2 closed | 
| VGA IRQ enabled | JP1 | Pins 2 & 3 closed | |
| » | Hardware monitor disabled | SW1/1 | Off | 
| Hardware monitor enabled | SW1/1 | On | |
| » | Password disabled | SW3/2 | Off | 
| Password enabled | SW3/2 | On | |
| DIMM CONFIGURATION | ||
| Size | Bank 0 | Bank 1 | 
| 8MB | (1) 1M x 64 | None | 
| 16MB | (1) 2M x 64 | None | 
| 16MB | (1) 1M x 64 | (1) 1M x 64 | 
| 24MB | (1) 2M x 64 | (1) 1M x 64 | 
| 32MB | (1) 4M x 64 | None | 
| 32MB | (1) 2M x 64 | (1) 2M x 64 | 
| 40MB | (1) 4M x 64 | (1) 1M x 64 | 
| 48MB | (1) 4M x 64 | (1) 2M x 64 | 
| 64MB | (1) 8M x 64 | None | 
| 64MB | (1) 4M x 64 | (1) 4M x 64 | 
| 72MB | (1) 8M x 64 | (1) 1M x 64 | 
| 80MB | (1) 8M x 64 | (1) 2M x 64 | 
| 96MB | (1) 8M x 64 | (1) 4M x 64 | 
| 128MB | (1) 16M x 64 | None | 
| 128MB | (1) 8M x 64 | (1) 8M x 64 | 
| 136MB | (1) 16M x 64 | (1) 1M x 64 | 
| 144MB | (1) 16M x 64 | (1) 2M x 64 | 
| 160MB | (1) 16M x 64 | (1) 4M x 64 | 
| 192MB | (1) 16M x 64 | (1) 8M x 64 | 
| 256MB | (1) 16M x 64 | (1) 16M x 64 | 
| Note: Board accepts SDRAM memory. | ||
| CACHE CONFIGURATION | 
| Note: 512KB cache is factory installed and is not configurable. The location is unidentified. | 
| VIDEO MEMORY CONFIGURATION | 
| Note: 2/4MB video memory is factory installed and is not configurable. The location is unidentified. | 
| CPU SPEED SELECTION (AM K6-2) | |||||||
| CPU speed | Clock speed | Multiplier | JPX1 | SW1/2 | SW1/3 | SW1/4 | SW2/1 | 
| 266MHz | 66MHz | 4x | 2 & 3 | Off | On | Off | On | 
| 300MHz | 66MHz | 4.5x | 2 & 3 | Off | On | Off | On | 
| 300MHz | 100MHz | 3x | 2 & 3 | On | Off | Off | Off | 
| 350MHz | 100MHz | 3.5x | 2 & 3 | On | Off | Off | Off | 
| Note: Pins designated should be in the closed position. | |||||||
| CPU SPEED SELECTION (AM K6-2, CON’T) | |||||||
| CPU speed | Clock speed | Multiplier | SW2/2 | SW2/3 | SW3/1 | SW3/3 | SW3/4 | 
| 266MHz | 66MHz | 4x | Off | On | On | Off | Off | 
| 300MHz | 66MHz | 4.5x | On | On | On | Off | Off | 
| 300MHz | 100MHz | 3x | On | Off | On | On | On | 
| 350MHz | 100MHz | 3.5x | Off | Off | On | On | On | 
| CPU SPEED SELECTION (AM K6-S) | |||||||
| CPU speed | Clock speed | Multiplier | JPX1 | SW1/2 | SW1/3 | SW1/4 | SW2/1 | 
| 300MHz | 66MHz | 4.5x | 1 & 2 | Off | On | Off | On | 
| Note: Pins designated should be in the closed position. | |||||||
| CPU SPEED SELECTION (AM K6-S, CON’T) | |||||||
| CPU speed | Clock speed | Multiplier | SW2/2 | SW2/3 | SW3/1 | SW3/3 | SW3/4 | 
| 300MHz | 66MHz | 4.5x | On | Off | On | Off | Off | 
| CPU VOLTAGE SELECTION | |||||
| Voltage | SW2/4 | SW2/5 | SW2/6 | SW2/7 | SW2/8 | 
| 2.2v | Off | Off | Off | On | Off | 
| 2.3v | Off | Off | Off | On | On | 
| 2.8v | Off | On | Off | Off | Off | 
| 2.9v | Off | On | Off | Off | On | 
| 3.2v | Off | On | On | Off | Off | 
| 3.3v | Off | On | On | Off | On |