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# ACER, INC.
ACERALTOS 9100B
Device Type Mainboard
Processor Pentium II
Processor Speed 350/400MHz
Chip Set Intel 440BX
Video Chip Set Unidentified
Maximum Onboard 512MB (EDO supported)
Memory
Maximum Video 2MB
Memory
Cache 256/512KB (located on Pentium II CPU)
BIOS Acer
Dimensions 305mm x 244mm
I/O Options 32-bit PCI slots (5), Ethernet 10BaseT
connector, floppy drive interface, IDE
interface, SCSI interface, Wide Ultra SCSI
interface, PS/2 mouse port, serial ports (2),
VGA port, USB connectors (2), ATX power
connector, CPU slot
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| ATX power | ATX | VGA port | CN14A |
| connector | | | |
|-------------------+----------+------------------+----------|
| Chassis fan power | C1 | IDE interface | CN15 |
|-------------------+----------+------------------+----------|
| Chassis fan power | C2 | Ethernet 10BaseT | CN16 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Chassis fan power | C3 | SCSI interface | CN17 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN1 | Floppy drive | CN18 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN2 | USB connector 1 | CN19 |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN4 | USB connector 2 | CN19A |
|-------------------+----------+------------------+----------|
| Software shutdown | CN5 | External SCSI | CN22 |
| for 420 power | | interface | |
|-------------------+----------+------------------+----------|
| RDM connector | CN6 | IDE interface | CN23 |
| | | LED | |
|-------------------+----------+------------------+----------|
| RDM connector | CN7 | SMM connector | CN24 |
|-------------------+----------+------------------+----------|
| Soft off power | CN8 | External SCSI | CN25 |
| supply | | interface | |
|-------------------+----------+------------------+----------|
| Software shutdown | CN9 | Chassis | CNN1 |
| for 200 power | | intrusion | |
| | | connector | |
|-------------------+----------+------------------+----------|
| Power LED & | CN10 | 32-bit PCI slots | PC1 - |
| keylock | | | PC5 |
|-------------------+----------+------------------+----------|
| Redundant power | CN11 | CPU slot | SL2 |
| supply connector | | | |
|-------------------+----------+------------------+----------|
| NMI signal | CN12 | 3.3v power | U1 |
| connector | | | |
|-------------------+----------+------------------+----------|
| LED connector | CN13 | 3.3v power | U5 |
|-------------------+----------+------------------+----------|
| Parallel port | CN14 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | Factory configured - do not alter | JP1 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP2 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Password disabled | JP3 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Password enabled | JP3 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | 5v standby enabled | JP4 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | 5v standby disabled | JP4 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | On board video enabled | JP7 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | On board video disabled | JP7 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (2) 256K x 16 | None |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 16 | (2) 256K x 16 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI TERMINATON SELECTION |
|------------------------------------------------------------|
| Setting | JP6 |
|----------------------------------------+-------------------|
| Termination enabled | Pins 1 & 2 closed |
|----------------------------------------+-------------------|
| » Termination switchable through SCSI | Pins 2 & 3 closed |
| select utility | |
+------------------------------------------------------------+
IMG IMG 2
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| CPU2 fan power | CN1 | CPU1 fan power | CN3 |
|---------------------+----------+----------------+----------|
| Thermal detection | CN2 | Thermal | CN4 |
| connector 2 | | detection | |
| | | connector 1 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 64 | None | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 2M x 64 | None | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 64 | None | None | None |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x | (1) 1M x |
| | | | 64 | 64 |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x | (1) 2M x |
| | | | 64 | 64 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 8M x 64 | None | None | None |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 80MB | (1) 8M x 64 | (1) 2M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 96MB | (1) 8M x 64 | (1) 4M x 64 | None | None |
|------+-------------+-------------+------------+------------|
| 96MB | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x | None |
| | | | 64 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 16M x | None | None | None |
| | 64 | | | |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 64 | (1) 8M x | None | None |
| | | 64 | | |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 4M x 64 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 136MB | (1) 16M x | (1) 1M x | None | None |
| | 64 | 64 | | |
|-------+-------------+------------+------------+------------|
| 144MB | (1) 16M x | (1) 2M x | None | None |
| | 64 | 64 | | |
|-------+-------------+------------+------------+------------|
| 176MB | (1) 16M x | (1) 2M x | (1) 2M x | (1) 2M x |
| | 64 | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 192MB | (1) 16M x | (1) 8M x | None | None |
| | 64 | 64 | | |
|-------+-------------+------------+------------+------------|
| 192MB | (1) 8M x 64 | (1) 8M x | (1) 8M x | None |
| | | 64 | 64 | |
|-------+-------------+------------+------------+------------|
| 256MB | (1) 16M x | (1) 16M x | None | None |
| | 64 | 64 | | |
|-------+-------------+------------+------------+------------|
| 256MB | (1) 8M x 64 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 272MB | (1) 16M x | (1) 16M x | (1) 1M x | (1) 1M x |
| | 64 | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 288MB | (1) 16M x | (1) 16M x | (1) 2M x | (1) 2M x |
| | 64 | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 320MB | (1) 16M x | (1) 16M x | (1) 4M x | (1) 4M x |
| | 64 | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 384MB | (1) 16M x | (1) 16M x | (1) 16M x | None |
| | 64 | 64 | 64 | |
|-------+-------------+------------+------------+------------|
| 512MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x |
| | 64 | 64 | 64 | 64 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+-----------------------------------------------------------+
| CACHE CONFIGURATION |
|-----------------------------------------------------------|
| Note: 256KB/512KB cache is located on the Pentium II CPU. |
+-----------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1A | JP1B | JP1C | JP1D |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 350MHz | 100MHz | 3.5x | 1 & 2 | 2 & 3 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 400MHz | 100MHz | 4x | 1 & 2 | 1 & 2 | 1 & | 2 & |
| | | | | | 2 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+