SYSTEMS 4XX/V & 4XX/DV Motherboard Settings and Configuration

DELL COMPUTER CORPORATION

SYSTEMS 4XX/V & 4XX/DV

Processor
80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed
33/50(internal)/66(internal)MHz
Chip Set
Opti
Max. Onboard DRAM
64MB
Cache
128/256KB
BIOS
Unidentified
Dimensions
330mm x 218mm
I/O Options
32-bit VESA local bus slots (2), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
PS/2 mouse port
CN1
VGA connector
CN8
Serial port 1
CN2
VGA feature connector
CN9
Serial port 2
CN3
IDE interface LED
CN11
External battery
CN4
Speaker
CN12
Parallel port
CN5
Power LED
CN13
IDE interface
CN6
Reset switch
CN14
Floppy drive interface
CN7
32-bit VESA Local bus slots
SL1, SL2

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Built in VGA subsystem enabled
JP1
Closed

Built in VGA subsystem disabled
JP1
Open
»
Factory configured - do not alter
JP2
Open
»
Factory configured - do not alter
JP3
Closed
»
Factory configured - do not alter
JP4
Closed
»
Factory configured - do not alter
JP7
Closed
»
80486SX installed in PQFP
JP10
Open

80486SX not installed in PQFP
JP10
Closed
»
Factory configured - do not alter
JP11
Open
»
256K of cache memory installed
JP12
Closed

Zero or 128K of cache memory installed
JP12
Open
Note:The exact location of JP11 on system board is unidentified by the manufacturer.

DRAM 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 36
NONE
16MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
16MB
(1) 4M x 36
NONE
NONE
NONE
20MB
(1) 4M x 36
(1) 1M x 36
NONE
NONE
24MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
NONE
28MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
32MB
(1) 4M x 36
(1) 4M x 36
NONE
NONE
36MB
(1) 4M x 36
(1) 4M x 36
(1) 1M x 36
NONE
40MB
(1) 4M x 36
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
48MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
NONE
52MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
(1) 1M x 36
64MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG (U42)
TAG (U27)
0KB
NONE
NONE
NONE
NONE
128KB
(4) 32K x 8
NONE
(1) 16K x 1
(1) 32K x 8
256KB
(4) 32K x 8
(4) 32K x 8
(1) 16K x 1
(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size
JP8
JP9
128KB
pins 1 & 2 closed
pins 1 & 2 closed
256KB
pins 2 & 3 closed
pins 2 & 3 closed

CPU TYPE CONFIGURATION
CPU Type
JP13
JP14
JP15
80486SX
Open
Open
pins 2 & 3 closed
80486DX
Closed
pins 1 & 2 closed
pins 1 & 2 closed
80486DX2
Closed
pins 1 & 2 closed
pins 1 & 2 closed

CPU SPEED CONFIGURATION
CPU type
CPU speed
JP5
JP6
80486SX
33MHz
Open
Closed
80486DX
33MHz
Open
Closed
80486DX2
50iMHz
Closed
Open
80486DX2
66iMHz
Open
Closed

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SYSTEMS 4XX/V & 4XX/DV Motherboard Settings and Configuration

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Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed	33/50(internal)/66(internal)MHz
Chip Set	Opti
Max. Onboard DRAM	64MB
Cache	128/256KB
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	32-bit VESA local bus slots (2), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
PS/2 mouse port	CN1	VGA connector	CN8
Serial port 1	CN2	VGA feature connector	CN9
Serial port 2	CN3	IDE interface LED	CN11
External battery	CN4	Speaker	CN12
Parallel port	CN5	Power LED	CN13
IDE interface	CN6	Reset switch	CN14
Floppy drive interface	CN7	32-bit VESA Local bus slots	SL1, SL2

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Built in VGA subsystem enabled	JP1	Closed
	Built in VGA subsystem disabled	JP1	Open
»	Factory configured - do not alter	JP2	Open
»	Factory configured - do not alter	JP3	Closed
»	Factory configured - do not alter	JP4	Closed
»	Factory configured - do not alter	JP7	Closed
»	80486SX installed in PQFP	JP10	Open
	80486SX not installed in PQFP	JP10	Closed
»	Factory configured - do not alter	JP11	Open
»	256K of cache memory installed	JP12	Closed
	Zero or 128K of cache memory installed	JP12	Open
Note:The exact location of JP11 on system board is unidentified by the manufacturer.

DRAM 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 36	NONE
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 4M x 36	NONE	NONE	NONE
20MB	(1) 4M x 36	(1) 1M x 36	NONE	NONE
24MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	NONE
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
36MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	NONE
40MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE
52MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG (U42)	TAG (U27)
0KB	NONE	NONE	NONE	NONE
128KB	(4) 32K x 8	NONE	(1) 16K x 1	(1) 32K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 16K x 1	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JP8	JP9
128KB	pins 1 & 2 closed	pins 1 & 2 closed
256KB	pins 2 & 3 closed	pins 2 & 3 closed

CPU TYPE CONFIGURATION
CPU Type	JP13	JP14	JP15
80486SX	Open	Open	pins 2 & 3 closed
80486DX	Closed	pins 1 & 2 closed	pins 1 & 2 closed
80486DX2	Closed	pins 1 & 2 closed	pins 1 & 2 closed

CPU SPEED CONFIGURATION
CPU type	CPU speed	JP5	JP6
80486SX	33MHz	Open	Closed
80486DX	33MHz	Open	Closed
80486DX2	50iMHz	Closed	Open
80486DX2	66iMHz	Open	Closed