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# ELITEGROUP COMPUTER SYSTEMS, INC.
P5HX-A (VER. 1.0)
Processor CX M1/Pentium
Processor Speed 75/90/100/120/133/150/166/200MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Unidentified
Dimensions 330mm x 218mm
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), cache slot, IR connectors (2), USB
connector, ATX power connector, soft on/off
power switch
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+-----------+-----------------+-----------|
| ATX power | ATX | Power LED & | J12 pins |
| connector | | keylock | 11 - 15 |
|------------------+-----------+-----------------+-----------|
| PS/2 mouse port | J3 | Speaker | J12 pins |
| | | | 17 - 20 |
|------------------+-----------+-----------------+-----------|
| Serial port 1 | J4 | IDE interface | J13 |
| | | LED | |
|------------------+-----------+-----------------+-----------|
| Serial port 2 | J5 | USB connector | J17 |
|------------------+-----------+-----------------+-----------|
| Parallel port | J6 | Chassis fan | J18 |
| | | power | |
|------------------+-----------+-----------------+-----------|
| Green PC LED | J8 | IR connector | J19 |
| | | (fast) | |
|------------------+-----------+-----------------+-----------|
| Floppy drive | J9 | IR connector | J20 |
| interface | | | |
|------------------+-----------+-----------------+-----------|
| IDE interface 1 | J10 | Soft on/off | J21 |
| | | power switch | |
|------------------+-----------+-----------------+-----------|
| IDE interface 2 | J11 | 32-bit PCI | PC1 - PC4 |
| | | slots | |
|------------------+-----------+-----------------+-----------|
| Green PC | J12 pins | Cache slot | SL1 |
| connector | 4 & 5 | | |
|------------------+-----------+-----------------+-----------|
| Reset switch | J12 pins | | |
| | 9 & 10 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| | Flash BIOS voltage select 12v | JP10 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 5v | JP10 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP11 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP11 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS normal operation | JP12 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS recovery mode | JP12 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP16 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 36 | None |
|------------------+--------------------+--------------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 |
|----------------+------------------+------------------------|
| 256KB (A) | None | 256KB module installed |
|----------------+------------------+------------------------|
| 256KB (B) | (2) 32K x 32 | Not installed |
|----------------+------------------+------------------------|
| 512KB (A) | None | 512KB module installed |
|----------------+------------------+------------------------|
| 512KB (B) | (2) 32K x 32 | 256KB module installed |
|----------------+------------------+------------------------|
| 512KB (C) | (2) 64K x 32 | Not installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP15 |
|-------------------------------+----------------------------|
| 256KB (A) | Open |
|-------------------------------+----------------------------|
| 256KB (B) | Closed |
|-------------------------------+----------------------------|
| 512KB (A) | Open |
|-------------------------------+----------------------------|
| 512KB (B) | Closed |
|-------------------------------+----------------------------|
| 512KB (C) | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP7 | JP8 | JP9 |
| speed | speed | | | | |
|----------+--------+------------+------+-------+------------|
| 120MHz | 50MHz | 2x | Open | 2 & 3 | 1 & 2, 3 & |
| | | | | | 4 |
|----------+--------+------------+------+-------+------------|
| 133MHz | 55MHz | 2x | Open | 2 & 3 | Open |
|----------+--------+------------+------+-------+------------|
| 150MHz | 60MHz | 2x | Open | 2 & 3 | 3 & 4 |
|----------+--------+------------+------+-------+------------|
| 166MHz | 66MHz | 2x | Open | 2 & 3 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP7 | JP8 | JP9 |
| speed | speed | | | | |
|----------+--------+------------+--------+--------+---------|
| 75MHz | 50MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & 2, |
| | | | | | 3 & 4 |
|----------+--------+------------+--------+--------+---------|
| 90MHz | 60MHz | 1.5x | 1 & 2 | 1 & 2 | 3 & 4 |
|----------+--------+------------+--------+--------+---------|
| 100MHz | 66MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+--------+------------+--------+--------+---------|
| 120MHz | 60MHz | 2x | 1 & 2 | 2 & 3 | 3 & 4 |
|----------+--------+------------+--------+--------+---------|
| 133MHz | 66MHz | 2x | 1 & 2 | 2 & 3 | 1 & 2 |
|----------+--------+------------+--------+--------+---------|
| 150MHz * | 60MHz | 2.5x | 2 & 3 | 2 & 3 | 3 & 4 |
|----------+--------+------------+--------+--------+---------|
| 166MHz * | 66MHz | 2.5x | 2 & 3 | 2 & 3 | 1 & 2 |
|----------+--------+------------+--------+--------+---------|
| 200MHz | 66MHz | 3x | 2 & 3 | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
| *If P55C is used, install U37. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP1 | JP2 | JP3 | JP4 | JP5 |
|-----------------+--------+--------+--------+-------+-------|
| » | 3.3v | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|----+------------+--------+--------+--------+-------+-------|
| | 3.52v | 3 & 4 | 3 & 4 | 3 & 4 | 3 & 4 | 3 & 4 |
|----+------------+--------+--------+--------+-------+-------|
| | Intel P55C | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+