HP VECTRA 486S/20 Motherboard Settings and Configuration

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HP VECTRA 486S/20

Processor
80486SX/80487SX
Processor Speed
20MHz
Chip Set
HP
Max. Onboard DRAM
64MB
Cache
8KB
BIOS
Unidentified
Dimensions
330mm x 218mm
I/O Options
Mouse port, floppy drive interface, IDE interface, parallel port, serial ports (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Mouse port
CN1
External battery
J1
Parallel port
CN2
IDE interface LED
J2
Serial port 1
CN3
Speaker
J3
Serial port 2
CN4
Control panel connector
J4
Floppy drive interface
CN6

USER CONFIGURABLE SETTINGS
Function
Switch
Position

BIOS write protect enabled
SW1
"Locked"

BIOS write protect disabled
SW1
"Unlocked"
»
CMOS normal operation
SW2/1
Off

CMOS memory clear
SW2/1
On
»
Do not erase power-on password in CMOS
SW2/2
Off

Erase power-on password in CMOS
SW2/2
On
»
Lock EISA configuration settings
SW2/3
On

Unlock EISA configuration settings
SW2/3
Off

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
2MB
(2) 256K x 36
NONE
NONE
NONE
4MB
(2) 512KB x 36
NONE
NONE
NONE
4MB
(2) 256K x 36
(2) 256K x 36
NONE
NONE
6MB
(2) 256K x 36
(2) 256K x 36
(2) 256K x 36
NONE
8MB
(2) 256K x 36
(2) 256K x 36
(2) 256K x 36
(2) 256K x 36
8MB
(2) 512KB x 36
(2) 512KB x 36
NONE
NONE
8MB
(2) 1M x 36
NONE
NONE
NONE
10MB
(2) 1M x 36
NONE
(2) 256K x 36
NONE
12MB
(2) 1M x 36
NONE
(2) 512KB x 36
NONE
16MB
(2) 2M x 36
NONE
NONE
NONE
16MB
(2) 1M x 36
(2) 1M x 36
NONE
NONE
18MB
(2) 1M x 36
(2) 1M x 36
(2) 256K x 36
NONE
18MB
(2) 2M x 36
NONE
(2) 256K x 36
NONE
20MB
(2) 2M x 36
NONE
(2) 512K x 36
NONE
20MB
(2) 2M x 36
NONE
(2) 256K x 36
(2) 256K x 36
24MB
(2) 1M x 36
(2) 1M x 36
(2) 1M x 36
NONE
24MB
(2) 2M x 36
(2) 512K x 36
(2) 512K x 36
NONE
24MB
(2) 2M x 36
NONE
(2) 1M x 36
NONE
32MB
(2) 2M x 36
(2) 2M x 36
NONE
NONE
32MB
(2) 2M x 36
(2) 1M x 36
(2) 1M x 36
NONE
32MB
(2) 2M x 36
(2) 2M x 36
(2) 2M x 36
NONE
34MB
(2) 2M x 36
(2) 256K x 36
NONE
NONE
36MB
(2) 2M x 36
(2) 512K x 36
NONE
NONE
36MB
(2) 2M x 36
(2) 256K x 36
(2) 256K x 36
NONE
40MB
(2) 2M x 36
(2) 2M x 36
(2) 512K x 36
(2) 512K x 36

DRAM CONFIGURATION (CONTINUED)
Size
Bank 0
Bank 1
Bank 2
Bank 3
40MB
(2) 2M x 36
(2) 2M x 36
(2) 1M x 36
NONE
48MB
(2) 2M x 36
(2) 2M x 36
(2) 1M x 36
(2) 1M x 36
48MB
(2) 2M x 36
(2) 2M x 36
(2) 2M x 36
NONE
64MB
(2) 2M x 36
(2) 2M x 36
(2) 2M x 36
(2) 2M x 36

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HP VECTRA 486S/20 Motherboard Settings and Configuration

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Processor	80486SX/80487SX
Processor Speed	20MHz
Chip Set	HP
Max. Onboard DRAM	64MB
Cache	8KB
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	Mouse port, floppy drive interface, IDE interface, parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Mouse port	CN1	External battery	J1
Parallel port	CN2	IDE interface LED	J2
Serial port 1	CN3	Speaker	J3
Serial port 2	CN4	Control panel connector	J4
Floppy drive interface	CN6

USER CONFIGURABLE SETTINGS
Function		Switch	Position
	BIOS write protect enabled	SW1	"Locked"
	BIOS write protect disabled	SW1	"Unlocked"
»	CMOS normal operation	SW2/1	Off
	CMOS memory clear	SW2/1	On
»	Do not erase power-on password in CMOS	SW2/2	Off
	Erase power-on password in CMOS	SW2/2	On
»	Lock EISA configuration settings	SW2/3	On
	Unlock EISA configuration settings	SW2/3	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
2MB	(2) 256K x 36	NONE	NONE	NONE
4MB	(2) 512KB x 36	NONE	NONE	NONE
4MB	(2) 256K x 36	(2) 256K x 36	NONE	NONE
6MB	(2) 256K x 36	(2) 256K x 36	(2) 256K x 36	NONE
8MB	(2) 256K x 36	(2) 256K x 36	(2) 256K x 36	(2) 256K x 36
8MB	(2) 512KB x 36	(2) 512KB x 36	NONE	NONE
8MB	(2) 1M x 36	NONE	NONE	NONE
10MB	(2) 1M x 36	NONE	(2) 256K x 36	NONE
12MB	(2) 1M x 36	NONE	(2) 512KB x 36	NONE
16MB	(2) 2M x 36	NONE	NONE	NONE
16MB	(2) 1M x 36	(2) 1M x 36	NONE	NONE
18MB	(2) 1M x 36	(2) 1M x 36	(2) 256K x 36	NONE
18MB	(2) 2M x 36	NONE	(2) 256K x 36	NONE
20MB	(2) 2M x 36	NONE	(2) 512K x 36	NONE
20MB	(2) 2M x 36	NONE	(2) 256K x 36	(2) 256K x 36
24MB	(2) 1M x 36	(2) 1M x 36	(2) 1M x 36	NONE
24MB	(2) 2M x 36	(2) 512K x 36	(2) 512K x 36	NONE
24MB	(2) 2M x 36	NONE	(2) 1M x 36	NONE
32MB	(2) 2M x 36	(2) 2M x 36	NONE	NONE
32MB	(2) 2M x 36	(2) 1M x 36	(2) 1M x 36	NONE
32MB	(2) 2M x 36	(2) 2M x 36	(2) 2M x 36	NONE
34MB	(2) 2M x 36	(2) 256K x 36	NONE	NONE
36MB	(2) 2M x 36	(2) 512K x 36	NONE	NONE
36MB	(2) 2M x 36	(2) 256K x 36	(2) 256K x 36	NONE
40MB	(2) 2M x 36	(2) 2M x 36	(2) 512K x 36	(2) 512K x 36

DRAM CONFIGURATION (CONTINUED)
Size	Bank 0	Bank 1	Bank 2	Bank 3
40MB	(2) 2M x 36	(2) 2M x 36	(2) 1M x 36	NONE
48MB	(2) 2M x 36	(2) 2M x 36	(2) 1M x 36	(2) 1M x 36
48MB	(2) 2M x 36	(2) 2M x 36	(2) 2M x 36	NONE
64MB	(2) 2M x 36	(2) 2M x 36	(2) 2M x 36	(2) 2M x 36