DELL COMPUTER CORPORATION
OMNIPLEX 4XX/MX(V), OMNIPLEX 4XXS/MX(V), OMNIPLEX 4XX/L(V)
|
Device Type |
Mainboard |
|
Processor |
80486SX/80486SX2/80487SX/80486DX/80486DX2/80486DX4 |
|
Processor Speed |
25/33MHz |
|
Chip Set |
Headland |
|
Video Chip Set |
Tseng |
|
Maximum Onboard Memory |
64MB |
|
Maximum Video Memory |
1MB |
|
Cache |
128KB |
|
BIOS |
Unidentified |
|
Dimensions |
Unidentified |
|
I/O Options (backplane) |
floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot |
|
CONNECTIONS |
|||
|
Purpose |
Location |
Purpose |
Location |
|
VGA port |
CN1 |
Video memory module connector |
CN10 |
|
Parallel port |
CN2 |
Video memory module connector |
CN11 |
|
Serial port 2 |
CN3 |
PQFP socket |
CPU2 |
|
Serial port 1 |
CN4 |
Speaker |
JP2 |
|
PS/2 mouse port |
CN5 |
External battery |
JP5 |
|
VGA feature connector |
CN6 |
Panel connector |
JP6 |
|
Floppy drive interface |
CN7 |
Riser slot |
SL1 |
|
IDE interface |
CN8 |
VESA riser slot |
SL2 |
|
IDE interface LED |
CN9 |
Cache connector |
SL3 |
|
USER CONFIGURABLE SETTINGS |
|||
|
Function |
Label |
Position |
|
|
» |
Factory configured - do not alter |
JP1/3 & 4 |
Open |
|
» |
Factory configured - do not alter |
JP1/7 & 8 |
Open |
|
» |
Factory configured - do not alter |
JP1/9 & 10 |
Open |
|
» |
Enable built-in VGA |
JP1/11 & 12 |
Closed |
|
Disable built-in VGA |
JP1/11 & 12 |
Open |
|
|
W32 chip installed on board |
JP1/13 & 14 |
Open |
|
|
W31 and video card installed on board |
JP1/13 & 14 |
Closed |
|
|
» |
I/O addresses are 26Eh-26Fh |
JP1/15 & 16 |
Closed |
|
I/O addresses are 398h-399h |
JP1/15 & 16 |
Open |
|
|
» |
Password feature enabled |
JP1/17 & 18 |
Closed |
|
Password feature disabled |
JP1/17 & 18 |
Open |
|
|
CPU installed in upgrade socket |
JP1/19 & 20 |
Closed |
|
|
CPU installed in PQFP socket |
JP1/19 & 20 |
Open |
|
|
» |
Factory configured - do not alter |
JP3/1 & 2 |
Closed |
|
» |
PS/2 port enabled |
JP4/2 & 3 |
Closed |
|
PS/2 port disabled |
JP4/2 & 3 |
Open |
|
|
» |
Factory configured - do not alter |
JP4/1 & 2 |
Open |
|
» |
Flash BIOS can be updated by diskette |
JP8/1 & 2 |
Closed |
|
Flash BIOS cannot be updated by diskette |
JP8/1 & 2 |
Open |
|
|
» |
Factory configured - do not alter |
JP8/3 & 4 |
Open |
|
» |
Factory configured - do not alter |
JP8/5 & 6 |
Open |
|
VESA RISER CARD CONFIGURATION |
||
|
Setting |
JP7/1 & 3 |
JP7/2 & 4 |
|
VESA riser card not installed |
Closed |
Closed |
|
VESA riser card installed |
Open |
Open |
|
SIMM CONFIGURATION |
||
|
Size |
Bank 0 |
Bank 1 |
|
8MB |
(2) 1M x 36 |
None |
|
16MB |
(2) 1M x 36 |
(2) 1M x 36 |
|
32MB |
(2) 4M x 36 |
None |
|
40MB |
(2) 4M x 36 |
(2) 1M x 36 |
|
64MB |
(2) 4M x 36 |
(2) 4M x 36 |