HEWLETT-PACKARD COMPANY

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