Device Type

Mainboard

Processor

CX M1/AM K5/Pentium

Processor Speed

75/90/100/120/133/150/166/200MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

128MB (EDO supported)

Maximum Video Memory

None

Cache

256/512KB

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), cache slot, IR connector, USB connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Standby power connector

CN1

Power LED & keylock

CN16/pins 1 – 5

Serial port 2

CN2

Speaker

CN16/pins 7 – 10

Serial port 1

CN3

Green PC LED

CN16/pins 12 & 13

Parallel port

CN4

Reset switch

CN16/pins 19 & 20

Floppy drive interface

CN5

Green PC connector

CN17

IDE interface 2

CN6

Software shutdown switch

CN18

IDE interface 1

CN9

IR connector

CN19

PS/2 mouse port

CN11

IDE interface LED

CN20

USB connector

CN12

32-bit PCI slots

PC1 – PC4

CPU power shorting block

CN13

Cache slot

SL1

CPU fan power

CN14

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

BIOS type select flash

JP4

Pins 2 & 3 closed

BIOS type select EPROM

JP4

Pins 1 & 2 closed

SIMM CONFIGURATION

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

CACHE CONFIGURATION

Size

Bank 0

SL1

256KB

(2) 32K x 32

Not installed

512KB

(2) 32K x 32

256KB module installed

CACHE JUMPER CONFIGURATION

Size

JP8

JP9

256KB

Pins 2 & 3 closed

Pins 2 & 3 closed

512KB

Pins 1 & 2 closed

Pins 1 & 2 closed

CACHE TYPE CONFIGURATION

Type

JP10

» M1 1 + 4 mode

Pins 2 & 3 closed

M1 linear burst mode

Pins 1 & 2 closed

CPU CLOCK FREQUENCY SELECTION

Clock speed

S1/3

S1/4

50MHz

On

On

60MHz

Off

On

66MHz

On

Off

CPU BUS RATIO SELECTION (CYRIX)

Bus ratio

S1/1

SW1/2

1

On

On

2

Off

On

3

Off

Off

4

On

Off

CPU BUS RATIO SELECTION (AMD)

Bus ratio

S1/1

SW1/2

2

On

On

2

Off

On

3/2

On

Off

3/2

Off

Off

CPU BUS RATIO SELECTION (INTEL)

Bus ratio

S1/1

SW1/2

2

Off

On

3

On

Off

3/2

Off

Off

5/2

On

On

CPU VOLTAGE SELECTION

Voltage

V core

JP6

JP7

» 3.3v

2.8v

Pins 2 & 3 closed

Pins 2 & 3 closed

3.5v

2.5v

Pins 1 & 2 closed

Pins 1 & 2 closed

BIOS SELECTION

Type

JP5

NC

Pins 1 & 2 closed

» 29E010

Pins 2 & 3 closed

28F001

Pins 3 & 4 closed