ACER, INC

ACERALTOS 300W (M3B)
Device Type Mainboard
Processor Pentium/Pentium MMX
Processor Speed 133/150/166/200/233MHz
Chip Set Unidentified
Maximum Onboard Memory 256MB (EDO & SDRAM supported)
Cache 512KB
BIOS Acer
Dimensions Unidentified
I/O Options 32-bit PCI slots (3), IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), USB ports (2), Wake-on-LAN connector, SCSI daughter card interface


wpe8C.jpg (76584 bytes)

CONNECTIONS

Purpose

Location

Purpose

Location

USB port 1 CN1 Speaker CN13
Fan power CN2 IDE interface LED CN14
Fan power CN3 System busy LED CN15
Parallel port CN4 Reset switch & keylock CN16
PS/2 mouse port CN5 Reserved CN21
USB port 2 CN6 Chassis connector CN22
Serial port 1 CN7 Power switch CN23
Serial port 2 CN8 Wake-on-LAN connector CN24
5v suspend connector CN9 System fan power FA1
IDE interface 1 CN10 32-bit PCI slots

PC1 - PC3
IDE interface 2 CN11 SCSI daughter card interface

PC4
Floppy drive interface CN12    
Note:  Location of CN24 is unidentified.


USER CONFIGURABLE SETTINGS

Function

Label

Position

 

 Hardware monitoring enabled JP1 Pins 1 & 2 closed
  hardware monitoring disabled JP1 Pins 2 & 3 closed
» Factory configured - do not alter JP5 Unidentified
  Boot block locked JP8 Pins 1 & 2 closed

 

 Boot block unlocked JP8 Pins 2 & 3 closed
  Password enabled JP10 Pins 1 & 2 closed
  Password disabled JP10 Pins 2 & 3 closed
  BIOS Logo Acer JP11 Pins 1 & 2 closed
  BIOS Logo OEM JP11 Pins 2 & 3 closed
» Factory configured - do not alter JP12 Unidentified
  Beep message from internal buzzer JP13 Pins 1 & 2 closed
  Beep message from speaker JP13 Pins 2 & 3 closed


DIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

16MB

(1) 2M x 64

None

None

32MB

(1) 4M x 64

None

None

32MB

(1) 2M x 64

(1) 2M x 64

None

64MB

(1) 8M x 64

None

None

64MB

(1) 4M x 64

(1) 4M x 64

None

64MB

(1) 4M x 64

(1) 2M x 64

(1) 2M x 64

80MB

(1) 4M x 64

(1) 4M x 64

(1) 2M x 64

96MB

(1) 8M x 64

(1) 2M x 64

(1) 2M x 64

96MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

128MB

(1) 16M x 64*

None

None

128MB

(1) 8M x 64

(1) 8M x 64

None

128MB

(1) 8M x 64

(1) 4M x 64

(1) 4M x 64

144MB

(1) 8M x 64

(1) 8M x 64

(1) 2M x 64

160MB

(1) 16M x 64*

(1) 2M x 64

(1) 2M x 64

160MB

(1) 8M x 64

(1) 8M x 64

(1) 4M x 64

192MB

(1) 16M x 64*

(1) 4M x 64

(1) 4M x 64

192MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

256MB

(1) 16M x 64*

(1) 16M x 64*

None

256MB

(1) 16M x 64*

(1) 8M x 64

(1) 8M x 64
Note:   Board accepts EDO & SDRAM memory.
*Note:  Unbuffered EDO memory only.


CACHE CONFIGURATION

Note:  Location and configuration of cache is unavailable.


CPU SPEED SELECTION (PENTIUM)

CPU speed

Clock speed

Multiplier

JP2

JP3

133MHz

66MHz

2x

 Pins 1 & 2, 4 & 5 closed Pins 2 & 3, 5 & 6 closed

150MHz

60MHz

2.5x

 Pins 2 & 3, 5 & 6 closed Pins 1 & 2, 5 & 6 closed

166MHz

66MHz

2.5x

 Pins 1 & 2, 4 & 5 closed Pins 1 & 2, 5 & 6 closed

200MHz

66MHz

3x

 Pins 1 & 2, 4 & 5 closed Pins 1 & 2, 4 & 5 closed


CPU SPEED SELECTION (PENTIUM MMX)

CPU speed

Clock speed

Multiplier

JP2

JP3

166MHz

66MHz

2.5x

 Pins 1 & 2, 4 & 5 closed Pins 1 & 2, 5 & 6 closed

200MHz

66MHz

3x

 Pins 1 & 2, 4 & 5 closed Pins 1 & 2, 4 & 5 closed
233MHz 66MHz 3.5x Pins 1 & 2, 4 & 5 closed Pins 2 & 3, 4 & 5 closed


CPU TYPE SELECTION (FOR VOLTAGE SETTING)

Type

 JP14/Pins 1 & 2 JP14/Pins 3 & 4 JP14/Pins 5 & 6 JP14/Pins 7 & 8
Pentium Closed Closed Closed Closed
Pentium MMX Open Open Open Closed
Note:   Location of JP14 is unidentified.


CPU TYPE SELECTION (FOR H/W MONITOR)

Type

 JP15
Reserved Pins 1 & 2 closed
Reserved Pins 3 & 4 closed
Pentium/ Pentium MMX Pins 5 & 6 closed
Note:   Location of JP15 is unidentified.