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# DELL COMPUTER CORPORATION
DIMENSION XPS XX MDT, XPS XX FS
Device Mainboard
Type
Processor 80486DX2/80486DX4
Processor 50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set Unidentified
Maximum 64MB
Onboard
Memory
Cache 128/256KB
BIOS Unidentified
Dimensions 330mm x 218mm
I/O 32-bit VESA local bus slots (2), floppy drive
Options interface, IDE interface, parallel port, PS/2 mouse
port, serial ports (2)
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| IDE interface | CN1 | Serial port 2 | J16 |
|-------------------+----------+------------------+----------|
| Floppy drive | CN2 | Speaker | J33 |
| interface | | | |
|-------------------+----------+------------------+----------|
| External battery | CN3 | Power LED & | J34 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN4 | 32-bit VESA | SL1 & |
| | | local bus slots | SL2 |
|-------------------+----------+------------------+----------|
| Serial port 1 | J12 | IDE interface | W11 |
| | | LED | |
|-------------------+----------+------------------+----------|
| Parallel port | J15 | Reset switch | W12 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | W1 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Parallel port bidirectional | W5 | Pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port unidirectional | W5 | Pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | W6 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | W6 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W7 | Closed |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W8 | Pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W20 | Pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W31 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W40 | Pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W70 | Pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W71 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | SW1/2 | On |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | SW1/3 | Off |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | SW1/4 | Off |
| | alter | | |
|------------------------------------------------------------|
| Note: The location of the factory configured jumpers are |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | None |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | None |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 28MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | None |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | None |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 52MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | None | Unidentified |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | Unidentified |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W64 | W65 | W66 | W67 | W68 |
|----------+----------+----------+---------+--------+--------|
| 128KB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | SW1/1 |
|-------------------------------+----------------------------|
| 50iMHz | On |
|-------------------------------+----------------------------|
| 66iMHz | Off |
|-------------------------------+----------------------------|
| 75iMHz | On |
|-------------------------------+----------------------------|
| 100iMHz | Off |
+------------------------------------------------------------+