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# 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 256MB (SDRAM supported)
Memory
Maximum Video 4MB
Memory
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
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+------------+------------------+----------|
| ATX power | ATX | Serial port 1 | CN8 |
| connector | | | |
|-----------------+------------+------------------+----------|
| USB connector 1 | CN1 | Wake on modem | CN9 |
| | | connector | |
|-----------------+------------+------------------+----------|
| USB connector 2 | CN1A | IDE interface 2 | CN10 |
|-----------------+------------+------------------+----------|
| Power LED | CN2/pins 1 | IDE interface 1 | CN11 |
| | – 3 | | |
|-----------------+------------+------------------+----------|
| IDE interface | CN2/pins 4 | Floppy drive | CN12 |
| LED | – 7 | interface | |
|-----------------+------------+------------------+----------|
| Reset switch | CN2/pins 8 | Game/MIDI port | CN13 |
| | & 9 | | |
|-----------------+------------+------------------+----------|
| Soft off power | CN2/pins | Line in | CN13B |
| supply | 10 & 20 | | |
|-----------------+------------+------------------+----------|
| Turbo LED | CN2/pins | Line out | CN13C |
| | 11 – 13 | | |
|-----------------+------------+------------------+----------|
| IR connector | CN2/pins | Microphone in | CN13A |
| | 14 - 19 | | |
|-----------------+------------+------------------+----------|
| PS/2 mouse port | CN3 | Modem connector | CN14 |
|-----------------+------------+------------------+----------|
| AMC connector | CN5 | Audio in – | CN15 |
| | | CD-ROM | |
|-----------------+------------+------------------+----------|
| 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 | C1 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | C2 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | C3 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | C4 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | C5 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | FN2 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | 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 |Multiplier|JPX1 |SW1/2|SW1/3|SW1/4|SW2/1|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 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 |Multiplier|SW2/2|SW2/3|SW3/1|SW3/3|SW3/4|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 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 |Multiplier|JPX1 |SW1/2|SW1/3|SW1/4|SW2/1|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 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 |Multiplier|SW2/2|SW2/3|SW3/1|SW3/3|SW3/4|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 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 |
+------------------------------------------------------------+