Device Type

Mainboard

Processor

80486DX2/80486DX4/Pentium

Processor Speed

33/50(internal)/66(internal)/100(internal)/90/100MHz

Chip Set

Unidentified

Maximum Onboard Memory

512MB

Cache

256KB

BIOS

Acer

Dimensions

330mm x 218mm

I/O Options

32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), SCSI interface, parallel port, PS/2 mouse port, serial ports (2), CPU slot

CONNECTIONS

Purpose

Location

Purpose

Location

Chassis fan power

C1

IDE interface

CN7

Chassis fan power

C2

IDE interface

CN8

IDE interface LED

C3

PS/2 mouse port

CN9

Power LED & keylock

C4

Turbo/reset switch

J23

Serial port 1

CN1

Speaker

J24

Serial port 2

CN2

5v power

P1

Parallel port

CN3

3.3v auxiliary power

P2

Floppy drive interface

CN4

32-bit PCI slots

PC1 - PC3

Fixed disk interface

CN5

CPU slot

SL1

SCSI interface

CN6

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

BIOS type select Acer

JP1

Pins 1 & 2 closed

BIOS type select OEM

JP1

Pins 2 & 3 closed

»

Password disabled

JP2

Pins 2 & 3 closed

Password enabled

JP2

Pins 1 & 2 closed

»

Reset button enabled

JP5

Closed

Reset button disabled

JP5

Open

»

Buzzer enabled

JP6

Pins 1 & 2 closed

Speaker enabled

JP6

Pins 2 & 3 closed

SIMM CONFIGURATION (80486DX4 & SINGLE PENTIUM BOARDS INSTALLED)

Size

Bank 0

Bank 1

8MB

(2) 1M x 36

None

16MB

(2) 2M x 36

None

16MB

(2) 1M x 36

(2) 1M x 36

24MB

(2) 2M x 36

(2) 1M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

40MB

(2) 4M x 36

(2) 1M x 36

48MB

(2) 4M x 36

(2) 2M x 36

64MB

(2) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

72MB

(2) 8M x 36

(2) 1M x 36

80MB

(2) 8M x 36

(2) 2M x 36

96MB

(2) 8M x 36

(2) 4M x 36

128MB

(2) 8M x 36

(2) 8M x 36

SIMM CONFIGURATION (DUAL PENTIUM BOARD INSTALLED)

Size

Bank 0

Bank 1

8MB

(2) 1M x 36

None

16MB

(2) 2M x 36

None

16MB

(2) 1M x 36

(2) 1M x 36

24MB

(2) 2M x 36

(2) 1M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

40MB

(2) 4M x 36

(2) 1M x 36

48MB

(2) 4M x 36

(2) 2M x 36

64MB

(2) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

72MB

(2) 8M x 36

(2) 1M x 36

80MB

(2) 8M x 36

(2) 2M x 36

96MB

(2) 8M x 36

(2) 4M x 36

128MB

(2) 8M x 36

(2) 8M x 36

128MB

(2) 16M x 36

None

136MB

(2) 16M x 36

(2) 1M x 36

144MB

(2) 16M x 36

(2) 2M x 36

160MB

(2) 16M x 36

(2) 4M x 36

192MB

(2) 16M x 36

(2) 8M x 36

256MB

(2) 16M x 36

(2) 16M x 36

DMA CHANNEL SELECTION

Channel

JP3

JP4

» 1

Pins 1 & 2 closed

Pins 1 & 2 closed

3

Pins 2 & 3 closed

Pins 2 & 3 closed

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

C1

Unidentified

CACHE CONFIGURATION

Note: The location of the cache is unidentified.

CPU SPEED SELECTION

Speed

JP6

JP14

33MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

50iMHz

Pins 2 & 3 closed

Pins 2 & 3 closed

66iMHz

Pins 1 & 2 closed

Pins 1 & 2 closed

100iMHz

Pins 1 & 2 closed

Pins 1 & 2 closed

CPU TYPE SELECTION

Type

JP5

JP12

Non SL enhanced

Open

Pins 2 & 3 closed

SL enhanced

Closed

Pins 1 & 2, 3 & 4 closed

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

C1

Unidentified

CACHE CONFIGURATION

Note: The location of the cache is unidentified.

CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

JP1

90MHz

60MHz

1.5x

Pins 1 & 2 closed

100MHz

66MHz

1.5x

Pins 1 & 2 closed

100MHz

50MHz

2x

Pins 2 & 3 closed

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

C1

Unidentified

»

Factory configured - do not alter

C2

Unidentified

»

Factory configured - do not alter

C3

Unidentified

»

Factory configured - do not alter

C4

Unidentified

»

Factory configured - do not alter

JP1

Unidentified

»

Factory configured - do not alter

JP2

Unidentified

»

Factory configured - do not alter

JP13

Unidentified

SIMM CONFIGURATION (DUAL PENTIUM BOARD)

Size

Bank 0

Bank 1

8MB

(2) 1M x 36

None

16MB

(2) 2M x 36

None

16MB

(2) 1M x 36

(2) 1M x 36

24MB

(2) 2M x 36

(2) 1M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

40MB

(2) 4M x 36

(2) 1M x 36

48MB

(2) 4M x 36

(2) 2M x 36

64MB

(2) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

72MB

(2) 8M x 36

(2) 1M x 36

80MB

(2) 8M x 36

(2) 2M x 36

96MB

(2) 8M x 36

(2) 4M x 36

128MB

(2) 8M x 36

(2) 8M x 36

128MB

(2) 16M x 36

None

136MB

(2) 16M x 36

(2) 1M x 36

144MB

(2) 16M x 36

(2) 2M x 36

160MB

(2) 16M x 36

(2) 4M x 36

192MB

(2) 16M x 36

(2) 8M x 36

256MB

(2) 16M x 36

(2) 16M x 36

CACHE CONFIGURATION

Note: The location of the cache is unidentified.

CACHE JUMPER CONFIGURATION

Type

JP12

JP14

JP15

JP17

JP18

Standard

1 & 2

Closed

Closed

Closed

Closed

Synchronous

2 & 3

Open

Open

Open

Open

Note: Pins designated should be in the closed position.