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# ACER, INC.
AX5TC
Device Type Mainboard
Processor CX 6X86/CX 6X86L/CX 686MX/AM K5/AM
K6/IDT/Pentium/Pentium MMX
Processor Speed 90/100/120/133/150/166/180/200/233/266/300MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 256MB (EDO & SDRAM supported)
Memory
Maximum Video None
Memory
Cache 512KB
BIOS Award
Dimensions 305mm x 208mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse port, serial ports
(2), IR connector, USB connectors (2), ATX
power connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+-----------+------------------+----------|
| ATX power | ATX | Parallel port | CN1 |
| connector | | | |
|------------------+-----------+------------------+----------|
| Power LED & | C1/pins 1 | Serial port 2 | CN2 |
| keylock | - 5 | | |
|------------------+-----------+------------------+----------|
| Speaker | C1/pins 7 | Serial port 1 | CN3 |
| | - 10 | | |
|------------------+-----------+------------------+----------|
| Reset switch | C1/pins | USB connector 1 | CN4 |
| | 19 & 20 | | |
|------------------+-----------+------------------+----------|
| Wake on LAN | C2 | USB connector 2 | CN5 |
| connector | | | |
|------------------+-----------+------------------+----------|
| Wake on modem | C3 | PS/2 mouse port | CN6 |
| connector | | | |
|------------------+-----------+------------------+----------|
| IDE interface | C4 | Floppy drive | CN7 |
| LED | | interface | |
|------------------+-----------+------------------+----------|
| Soft off power | C5 | IDE interface 2 | CN8 |
| supply | | | |
|------------------+-----------+------------------+----------|
| Chassis fan | C6 | IDE interface 1 | CN9 |
| power | | | |
|------------------+-----------+------------------+----------|
| Chassis fan | C7 | IR connector | IR1 |
| power | | | |
|------------------+-----------+------------------+----------|
| Chassis fan | C8 | 32-bit PCI slots | PC1 - |
| power | | | PC4 |
|------------------+-----------+------------------+----------|
| SB link | C9 | | |
| connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------+-------+-----------------|
| ยป | CMOS memory normal operation | JP14 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | CMOS memory clear | JP14 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 8MB | (1) 1M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (1) 2M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 24MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 4M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 32MB | (1) 2M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 40MB | (1) 2M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 48MB | (1) 4M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 48MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 56MB | (1) 4M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 64MB | (1) 8M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 64MB | (1) 4M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 72MB | (1) 4M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 80MB | (1) 8M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 80MB | (1) 8M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 80MB | (1) 4M x 64 | (1) 4M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 88MB | (1) 8M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 96MB | (1) 8M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 96MB | (1) 8M x 64 | (1) 4M x 64 | None |
|------------+---------------+---------------+---------------|
| 96MB | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 104MB | (1) 8M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 112MB | (1) 8M x 64 | (1) 4M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 128MB | (1) 16M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 128MB | (1) 8M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 | None |
|------------+---------------+---------------+---------------|
| 136MB | (1) 16M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 136MB | (1) 8M x 64 | (1) 8M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 144MB | (1) 16M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 144MB | (1) 16M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 144MB | (1) 8M x 64 | (1) 8M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 152MB | (1) 16M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 160MB | (1) 16M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 160MB | (1) 16M x 64 | (1) 4M x 64 | None |
|------------+---------------+---------------+---------------|
| 160MB | (1) 8M x 64 | (1) 8M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 168MB | (1) 16M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 176MB | (1) 16M x 64 | (1) 4M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 192MB | (1) 16M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 192MB | (1) 16M x 64 | (1) 8M x 64 | None |
|------------+---------------+---------------+---------------|
| 192MB | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|------------+---------------+---------------+---------------|
| 200MB | (1) 16M x 64 | (1) 8M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 208MB | (1) 16M x 64 | (1) 8M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 224MB | (1) 16M x 64 | (1) 8M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 256MB | (1) 16M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|------------------------------------------------------------|
| Note: Board accepts EDO & SDRAM memory. |
+------------------------------------------------------------+
+--------------------------------------------------+
| CACHE CONFIGURATION |
|--------------------------------------------------|
| Note: The location of the cache is unidentified. |
+--------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|S1/1|S1/2|S1/3| JP4 | JP5 | JP6 |
|speed | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|150MHz| 60MHz | 2x | On |Off |Off |2 & 3|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 66MHz | 2x | On |Off |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|200MHz| 75MHz | 2x | On |Off |Off |1 & 2|2 & 3|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|S1/1|S1/2|S1/3| JP4 | JP5 | JP6 |
|speed | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|150MHz| 60MHz | 2x | On |Off |Off |2 & 3|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 66MHz | 2x | On |Off |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|200MHz| 75MHz | 2x | On |Off |Off |1 & 2|2 & 3|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|S1/1|S1/2|S1/3| JP4 | JP5 | JP6 |
|speed | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 60MHz | 2.5x | On | On |Off |2 & 3|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|200MHz| 66MHz | 2.5x | On | On |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|200MHz| 75MHz | 2x | On |Off |Off |1 & 2|2 & 3|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|233MHz| 66MHz | 3x |Off | On |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|233MHz| 83MHz | 2x | On |Off |Off |2 & 3|1 & 2|2 & 3|
|------+---------+----------+----+----+----+-----+-----+-----|
|266MHz| 66MHz | 3.5x |Off |Off |Off |1 & 2|1 & 2|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|S1/1|S1/2|S1/3| JP4 | JP5 | JP6 |
|speed | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|90MHz | 60MHz | 1.5x |Off |Off |Off |2 & 3|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|100MHz| 66MHz | 1.5x |Off |Off |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|120MHz| 60MHz | 1.5x |Off |Off |Off |2 & 3|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|133MHz| 66MHz | 1.5x |Off |Off |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 66MHz | 1.75x | On | On |Off |1 & 2|1 & 2|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|S1/1|S1/2|S1/3| JP4 | JP5 | JP6 |
|speed | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 66MHz | 2.5x | On | On |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|200MHz| 66MHz | 3x |Off | On |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|233MHz| 66MHz | 3.5x |Off |Off |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|266MHz| 66MHz | 4x | On |Off | On |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|300MHz| 66MHz | 4.5x | On | On | On |1 & 2|1 & 2|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IDT C6) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|S1/1|S1/2|S1/3| JP4 | JP5 | JP6 |
|speed | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|150MHz| 75MHz | 2x | On |Off |Off |1 & 2|2 & 3|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|180MHz| 60MHz | 3x |Off | On |Off |2 & 3|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|200MHz| 66MHz | 3x |Off | On |Off |1 & 2|1 & 2|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|S1/1|S1/2|S1/3| JP4 | JP5 | JP6 |
|speed | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|90MHz | 60MHz | 1.5x |Off |Off |Off |2 & 3|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|100MHz| 66MHz | 1.5x |Off |Off |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|120MHz| 60MHz | 2x | On |Off |Off |2 & 3|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|133MHz| 66MHz | 2x | On |Off |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|150MHz| 60MHz | 2.5x | On | On |Off |2 & 3|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 66MHz | 2.5x | On | On |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|200MHz| 66MHz | 3x |Off | On |Off |1 & 2|1 & 2|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|S1/1|S1/2|S1/3| JP4 | JP5 | JP6 |
|speed | speed | | | | | | | |
|------+---------+----------+----+----+----+-----+-----+-----|
|150MHz| 60MHz | 2.5x | On | On |Off |2 & 3|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|166MHz| 66MHz | 2.5x | On | On |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|200MHz| 66MHz | 3x |Off | On |Off |1 & 2|1 & 2|1 & 2|
|------+---------+----------+----+----+----+-----+-----+-----|
|233MHz| 66MHz | 3.5x |Off |Off |Off |1 & 2|1 & 2|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | S1/4 | S1/5 | S1/6 | S1/7 | S1/8 |
|----------+---------+---------+---------+---------+---------|
| 1.30v | Off | Off | Off | Off | On |
|----------+---------+---------+---------+---------+---------|
| 1.35v | On | Off | Off | Off | On |
|----------+---------+---------+---------+---------+---------|
| 1.40v | Off | On | Off | Off | On |
|----------+---------+---------+---------+---------+---------|
| 1.45v | On | On | Off | Off | On |
|----------+---------+---------+---------+---------+---------|
| 1.50v | Off | Off | On | Off | On |
|----------+---------+---------+---------+---------+---------|
| 1.55v | On | Off | On | Off | On |
|----------+---------+---------+---------+---------+---------|
| 1.60v | Off | On | On | Off | On |
|----------+---------+---------+---------+---------+---------|
| 1.65v | On | On | On | Off | On |
|----------+---------+---------+---------+---------+---------|
| 1.70v | Off | Off | Off | On | On |
|----------+---------+---------+---------+---------+---------|
| 1.75v | On | Off | Off | On | On |
|----------+---------+---------+---------+---------+---------|
| 1.80v | Off | On | Off | On | On |
|----------+---------+---------+---------+---------+---------|
| 1.85v | On | On | Off | On | On |
|----------+---------+---------+---------+---------+---------|
| 1.90v | Off | Off | On | On | On |
|----------+---------+---------+---------+---------+---------|
| 1.95v | On | Off | On | On | On |
|----------+---------+---------+---------+---------+---------|
| 2.00v | Off | On | On | On | On |
|----------+---------+---------+---------+---------+---------|
| 2.05v | On | On | On | On | On |
|----------+---------+---------+---------+---------+---------|
| 2.0v | Off | Off | Off | Off | Off |
|----------+---------+---------+---------+---------+---------|
| 2.1v | On | Off | Off | Off | Off |
|----------+---------+---------+---------+---------+---------|
| 2.2v | Off | On | Off | Off | Off |
|----------+---------+---------+---------+---------+---------|
| 2.3v | On | On | Off | Off | Off |
|----------+---------+---------+---------+---------+---------|
| 2.4v | Off | Off | On | Off | Off |
|----------+---------+---------+---------+---------+---------|
| 2.5v | On | Off | On | Off | Off |
|----------+---------+---------+---------+---------+---------|
| 2.6v | Off | On | On | Off | Off |
|----------+---------+---------+---------+---------+---------|
| 2.7v | On | On | On | Off | Off |
|----------+---------+---------+---------+---------+---------|
| 2.8v | Off | Off | Off | On | Off |
|----------+---------+---------+---------+---------+---------|
| 2.9v | On | Off | Off | On | Off |
|----------+---------+---------+---------+---------+---------|
| 3.0v | Off | On | Off | On | Off |
|----------+---------+---------+---------+---------+---------|
| 3.1v | On | On | Off | On | Off |
|----------+---------+---------+---------+---------+---------|
| 3.2v | Off | Off | On | On | Off |
|----------+---------+---------+---------+---------+---------|
| 3.3v | On | Off | On | On | Off |
|----------+---------+---------+---------+---------+---------|
| 3.4v | Off | On | On | On | Off |
|----------+---------+---------+---------+---------+---------|
| 3.5v | On | On | On | On | Off |
+------------------------------------------------------------+