Gigabyte GA-EP43-UD3L User Manual download pdf (Page 23)

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.

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

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

(SYS_FAN2) 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.

Pin No. Definition

1 GND

2 +12V

3 Sense

SYS_FAN1/PWR_FAN:

Pin No. Definition

1 GND

2 +12V / Speed Control

3 Sense

4 Speed Control

CPU_FAN:

Pin No. Definition

1 GND

2 +12V / Speed Control

3 Sense

4 Reserve

SYS_FAN2:

6) 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

SYS_FAN2

SYS_FAN1

PWR_FAN

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 95 96

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Gigabyte GA-EP43-UD3L User Manual Page 23