Gigabyte GA-P55M-UD4 User Manual download pdf (Page 24)

Hardware Installation - 24 -

3/4/5) CPU_FAN/SYS_FAN1/SYS_FAN2/PWR_FAN (Fan Headers)

The motherboard has a 4-pin CPU fan header (CPU_FAN), a 4-pin (SYS_FAN2) and a 3-pin (SYS_FAN1)

system fan headers, and a 3-pin power fan header (PWR_FAN). Most fan headers possess a foolproof

insertion design. When connecting a fan cable, be sure to connect it in the correct orientation (the black

connector wire is the ground wire). The motherboard supports CPU fan speed control, which requires

the use of a CPU fan with fan speed control design. For optimum heat dissipation, it is recommended

that a system fan be installed inside the chassis.

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

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

• These fan headers are not conguration jumper blocks. Do not place a jumper cap on the

headers.

CPU_FAN

SYS_FAN1/PWR_FAN

CPU_FAN:

Pin No. Denition

1 GND

2 +12V / Speed Control

3 Sense

4 Speed Control

SYS_FAN2:

Pin No. Denition

1 GND

2 +12V / Speed Control

3 Sense

4 Reserve

SYS_FAN1/PWR_FAN:

Pin No. Denition

1 GND

2 +12V

3 Sense

6) FDD (Floppy Disk Drive Connector)

This connector is used to connect a oppy disk drive. The types of oppy disk drives supported are:

360 KB, 720 KB, 1.2 MB, 1.44 MB, and 2.88 MB. Before connecting a oppy disk drive, be sure to locate

pin 1 of the connector and the oppy disk drive cable. The pin 1 of the cable is typically designated by a

stripe of different color. For purchasing the optional oppy disk drive cable, please contact the local dealer.

SYS_FAN2

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Gigabyte GA-P55M-UD4 User Manual Page 24