User`s manual

Hardware Installation- 23 -

• Be sure to connect fan cables to the fan headers to prevent your CPU and system from

overheating. Overheating may result in damage to the CPU or the system may hang.

• These fan headers are not configuration jumper blocks. Do not place a jumper cap on the

headers.

3/4) CPU_FAN/SYS_FAN (Fan Headers)

The motherboard has a 4-pin CPU fan header and a 4-pin system fan header. Each fan header

supplies a +12V power voltage and possesses a foolproof insertion design. When connecting a fan

cable, be sure to connect it in the correct orientation. Most fans are designed with color-coded

power connector wires. A red power connector wire indicates a positive connection and requires

a +12V voltage. The black connector wire is the ground wire. The motherboard supports CPU/

system fan speed control, which requires the use of a CPU/system fan with fan speed control

design. For optimum heat dissipation, it is recommended that a system fan be installed inside the

chassis.

Pin No. Definition

1 GND

2 +12V/Voltage Control

3 Sense

4 Speed Control

CPU_FAN:

SYS_FAN:

5) FDD (Floppy Disk Drive Connector)

This connector is used to connect a floppy disk drive. The types of floppy disk drives supported

are: 360 KB, 720 KB, 1.2 MB, 1.44 MB, and 2.88 MB. Before connecting a floppy disk drive, be

sure to locate pin 1 of the connector and the floppy disk drive cable. The pin 1 of the cable is

typically designated by a stripe of different color.

CPU_FAN

Pin No. Definition

1 GND

2 +12V/Voltage Control

3 Sense

4NC

SYS_FAN