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# ABIT COMPUTER CORPORATION
IT5H
Processor CX M1/AM K5/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 512MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
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 interface, serial
ports (2), cache slot, IR connector, USB
connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+-----------+----------------+------------|
| Parallel port | CN1 | Power LED & | PN1 pins 1 |
| | | keylock | - 5 |
|------------------+-----------+----------------+------------|
| Serial port 2 | CN2 | IDE interface | PN1 pins 7 |
| | | LED | & 8 |
|------------------+-----------+----------------+------------|
| Serial port 1 | CN3 | Standby | PN1 pins |
| | | connector | 10 & 11 |
|------------------+-----------+----------------+------------|
| Floppy drive | CN4 | Green PC | PN1 pins |
| interface | | connector | 13 & 14 |
|------------------+-----------+----------------+------------|
| IDE interface 2 | CN5 | Reset switch | PN2 pins 1 |
| | | | & 2 |
|------------------+-----------+----------------+------------|
| IDE interface 1 | CN6 | Speaker | PN2 pins 4 |
| | | | - 7 |
|------------------+-----------+----------------+------------|
| PS/2 mouse | CN7 | Turbo LED | PN2 pins 9 |
| interface | | | & 10 |
|------------------+-----------+----------------+------------|
| IR connector | IR | Turbo switch | PN2 pins |
| | | | 12 - 14 |
|------------------+-----------+----------------+------------|
| Chassis fan | FAN | Cache slot | SL1 |
| power | | | |
|------------------+-----------+----------------+------------|
| Power control | JS1 | USB connector | USB |
| connector | | | |
|------------------+-----------+----------------+------------|
| 32-bit PCI slots | PC1 – PC4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | CMOS memory normal operation | CMOS | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | CMOS | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JS1 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM/DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 8MB | (2) 1M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 8MB | None | None | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 2M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | None | None | (1) 2M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 1M x 36 | None | None | (1) 1M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 16MB | None | None | (1) 1M x | (1) 1M x |
| | | | 64 | 64 |
|------+-------------+-------------+------------+------------|
| 24MB | None | (2) 2M x 36 | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 24MB | (2) 2M x 36 | None | None | (1) 1M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 4M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 32MB | None | None | (1) 4M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 2M x 36 | None | None | (1) 2M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 32MB | None | None | (1) 2M x | (1) 2M x |
| | | | 64 | 64 |
|------+-------------+-------------+------------+------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 40MB | None | (2) 4M x 36 | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 48MB | None | (2) 2M x 36 | (1) 4M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 48MB | None | (2) 4M x 36 | (1) 2M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 64MB | (2) 8M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 64MB | None | None | (1) 8M x | None |
| | | | 64 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM/DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|---------+-------------+------------+-----------+-----------|
| 64MB | (2) 4M x 36 | (2) 4M x | None | None |
| | | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 64MB | (2) 4M x 36 | None | None | (1) 4M x |
| | | | | 64 |
|---------+-------------+------------+-----------+-----------|
| 64MB | None | None | (1) 4M x | (1) 4M x |
| | | | 64 | 64 |
|---------+-------------+------------+-----------+-----------|
| 72MB | (2) 8M x 36 | (2) 1M x | None | None |
| | | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 72MB | (2) 8M x 36 | None | None | (1) 1M x |
| | | | | 64 |
|---------+-------------+------------+-----------+-----------|
| 80MB | None | (2) 2M x | (1) 8M x | None |
| | | 36 | 64 | |
|---------+-------------+------------+-----------+-----------|
| 80MB | (2) 8M x 36 | (2) 2M x | None | None |
| | | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 80MB | (2) 8M x 36 | None | None | (1) 2M x |
| | | | | 64 |
|---------+-------------+------------+-----------+-----------|
| 96MB | (2) 4M x 36 | (2) 8M x | None | None |
| | | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 96MB | None | (2) 4M x | (1) 8M x | None |
| | | 36 | 64 | |
|---------+-------------+------------+-----------+-----------|
| 96MB | (2) 8M x 36 | None | None | (1) 4M x |
| | | | | 64 |
|---------+-------------+------------+-----------+-----------|
| 128MB | (2) 8M x 36 | (2) 8M x | None | None |
| | | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 128MB | (2) 8M x 36 | None | None | (1) 8M x |
| | | | | 64 |
|---------+-------------+------------+-----------+-----------|
| 128MB | None | None | (1) 8M x | (1) 8M x |
| | | | 64 | 64 |
|---------+-------------+------------+-----------+-----------|
| 128MB | (2) 8M x 36 | (2) 8M x | None | None |
| | | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 136MB | (2) 16M x | (2) 1M x | None | None |
| | 36 | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 144MB | (2) 16M x | (2) 2M x | None | None |
| | 36 | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 160MB | (2) 16M x | (2) 4M x | None | None |
| | 36 | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 192MB | (2) 16M x | (2) 8M x | None | None |
| | 36 | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 256MB | (2) 32M x | None | None | None |
| | 36 | | | |
|---------+-------------+------------+-----------+-----------|
| 256MB | (2) 16M x | (2) 16M x | None | None |
| | 36 | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 264MB | (2) 32M x | (2) 1M x | None | None |
| | 36 | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 272MB | (2) 32M x | (2) 2M x | None | None |
| | 36 | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 288MB | (2) 32M x | (2) 4M x | None | None |
| | 36 | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 320MB | (2) 32M x | (2) 8M x | None | None |
| | 36 | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 384MB | (2) 32M x | (2) 16M x | None | None |
| | 36 | 36 | | |
|---------+-------------+------------+-----------+-----------|
| 512MB | (2) 32M x | (2) 32M x | None | None |
| | 36 | 36 | | |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Board also accepts x |
| 32 SIMMs. Banks 0 & 1, 2 & 3 are interchangeable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 |
|----------------+------------------+------------------------|
| 256KB (A) | (2) 32K x 32 | Not installed |
|----------------+------------------+------------------------|
| 256KB (B) | None | 256KB module installed |
|----------------+------------------+------------------------|
| 512KB (A) | (2) 32K x 32 | 256KB module installed |
|----------------+------------------+------------------------|
| 512KB (B) | None | 512KB module installed |
|----------------+------------------+------------------------|
| 512KB (C) | (2) 64K x 32 | Not installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JC1 |
|-------------------------------+----------------------------|
| None | Open |
|-------------------------------+----------------------------|
| 256KB (A) | Open |
|-------------------------------+----------------------------|
| 256KB (B) | Open |
|-------------------------------+----------------------------|
| 512KB (A) | Closed |
|-------------------------------+----------------------------|
| 512KB (B) | Open |
|-------------------------------+----------------------------|
| 512KB (C) | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SELECTION |
|------------------------------------------------------------|
| Note: CPU speed and voltage configurations are set through |
| the BIOS in the CPU Soft Menu. |
+------------------------------------------------------------+