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407 Motherboard Settings and Configuration






UNIDENTIFIED

407

Processor

80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive

Processor Speed

20/25/33/40/50(internal)/50/66(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

256MB

Cache

128/256/1024KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J4

Speaker

JP22

Power LED & keylock

J6

Reset switch

S9

Turbo LED

JP15

32-bit VESA local bus slots

SL1 - SL3

Turbo switch

JP17

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP2

Closed

 

Monitor type select monochrome

JP2

Open

VESA clock delay enabled

JP12

pins 1 & 2 closed

 

VESA clock delay disabled

JP12

pins 2 & 3 closed

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) 1M x 36

(1) 4M x 36

NONE

NONE

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 16M x 36

NONE

NONE

NONE

80MB

(1) 4M x 36

(1) 16M x 36

NONE

NONE

128MB

(1) 16M x 36

(1) 16M x 36

NONE

NONE

160MB

(1) 4M x 36

(1) 4M x 36

(1) 16M x 36

(1) 16M x 36

192MB

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

NONE

208MB

(1) 4M x 36

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

256MB

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

NONE

(1) 32K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

1MB

(4) 128K x 8

(4) 128K x 8

(1) 128K x 8

CACHE JUMPER CONFIGURATION

Size

JP6

JP7

JP9

JP10

JP13

128KB

Open

pins 1 & 2 closed

pins 1 & 2 closed

Open

Closed

256KB

Open

pins 2 & 3 closed

pins 2 & 3 closed

Closed

Closed

1MB

Closed

pins 2 & 3 closed

pins 2 & 3 closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

JP4

JP5

80486SX

pins 2 & 3 closed

Open

80487SX

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

80486DX

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

80486DX2

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

Pentium Overdrive

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

CPU SPEED CONFIGURATION

Speed

JPA

JPB

JPC

JP20

JP21

20MHz

1 & 2

2 & 3

2 & 3

2 & 3

2 & 3

25MHz

2 & 3

1 & 2

2 & 3

2 & 3

2 & 3

33MHz

2 & 3

2 & 3

1 & 2

1 & 2

2 & 3

40MHz

1 & 2

1 & 2

2 & 3

2 & 3

1 & 2

50iMHz

2 & 3

1 & 2

2 & 3

2 & 3

2 & 3

50MHz

1 & 2

2 & 3

1 & 2

1 & 2

1 & 2

66iMHz

2 & 3

2 & 3

1 & 2

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

ADS# SIGNAL DELAY CONFIGURATION

Speed

JP3

JP27

20MHz

pins 2 & 3 closed (normal)

pins 2 & 3 closed (normal)

25MHz

pins 2 & 3 closed (normal)

pins 2 & 3 closed (normal)

33MHz

pins 2 & 3 closed (normal)

pins 2 & 3 closed (normal)

33MHz

pins 1 & 2 closed (delay)

pins 2 & 3 closed (normal)

40MHz

pins 1 & 2 closed (delay)

pins 2 & 3 closed (normal)

50MHz

pins 1 & 2 closed (delay)

pins 1 & 2 closed (delay)

VESA WAIT STATE CONFIGURATION

Wait states

JP16

0 wait states

Open

1 wait state

Closed

BUS SPEED CONFIGURATION

CPU speed

JP11

JP14

<= 33MHz

pins 1 & 2, 3 & 4 closed

Open

> 33MHz

pins 2 & 3 closed

Closed








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