- 23 - Hardware Installation
3/4/5) CPU_FAN/SYS_FAN1/SYS_FAN2/PWR_FAN (Fan Headers)
The motherboard has a 4-pin CPU fan header (CPU_FAN), two 3-pin system fan headers (SYS_FAN1
and SYS_FAN2), 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 conguration jumper blocks. Do not place a jumper cap on the
headers.
CPU_FAN:
Pin No. Denition
1 GND
2 +12V
3 Sense
4 Speed Control
SYS_FAN1/SYS_FAN2:
Pin No. Denition
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.
CPU_FAN
1
1
PWR_FAN
1
SYS_FAN1
1
SYS_FAN2
PWR_FAN:
Pin No. Denition
1 GND
2 +12V
3 Sense
1
2
33
34
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