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# SAMSUNG ELECTRONICS AMERICA, INC.
DeskMaster 486S/20
Processor 80486SX
Processor Speed 20MHz
Chip Set OPTI
Max. Onboard 32MB
DRAM
Cache None
BIOS Phoenix
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, IDE interface,
parallel port, PS/2 bus mouse, serial port
(2), VGA port, video feature interface
connector
NPU Options 80487SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | C1 | Floppy drive | C8 |
| | | interface | |
|------------------+----------+-------------------+----------|
| PS/2 bus mouse | C2 | Video feature | C9 |
| | | interface | |
|------------------+----------+-------------------+----------|
| Serial port two | C3 | Reset switch | J1 |
|------------------+----------+-------------------+----------|
| Serial port one | C4 | Power LED & | J2 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| Parallel port | C5 | Speaker | J3 |
|------------------+----------+-------------------+----------|
| VGA video port | C6 | IDE interface LED | J4 |
|------------------+----------+-------------------+----------|
| IDE interface | C7 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------------+--------+----------|
| » | Factory configured - do not alter | J5 | Closed |
|---+------------------------------------+--------+----------|
| » | IDE interface enabled | J6 | Closed |
|---+------------------------------------+--------+----------|
| | IDE interface disabled | J6 | Open |
|---+------------------------------------+--------+----------|
| » | Battery select internal | J7 | Closed |
|---+------------------------------------+--------+----------|
| | Battery select external | J7 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 4MB | (4) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 5MB | (4) 256K x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 17MB | (4) 256K x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+