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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_FAN1) and a 3-pin (SYS_FAN2)
system fans, and a 3-pin power 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 overheating. Over-
•
heating 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.
•
6) BAT (Battery)
The battery provides power to keep the values (such as BIOS configurations, date, and time information)
in the CMOS when the computer is turned off. Replace the battery when the battery voltage drops to a
low level, or the CMOS values may not be accurate or may be lost.
Always turn off your computer and unplug the power cord before replacing the battery.
•
Replace the battery with an equivalent one. Danger of explosion if the battery is replaced with an incorrect model.
•
Contact the place of purchase or local dealer if you are not able to replace the battery by yourself or uncertain
•
about the battery model.
When installing the battery, note the orientation of the positive side (+) and the negative side (-) of the battery (the
•
positive side should face up).
Used batteries must be handled in accordance with local environmental regulations.
•
CPU_FAN:
Pin No. Definition
1
CPU_FAN
SYS_FAN1:
Pin No. Definition
1
SYS_FAN1
SYS_FAN2/PWR_FAN:
Pin No. Definition
1
1
PWR_FAN
SYS_FAN2
You may clear the CMOS values by removing the battery:
1.
Turn off your computer and unplug the power cord.
2.
Gently remove the battery from the battery holder and wait for
one minute. (Or use a metal object like a screwdriver to touch the
positive and negative terminals of the battery holder, making them
short for 5 seconds.)
3.
Replace the battery.
4.
Plug in the power cord and restart your computer.
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1
GND
2
+12V /Speed Control
3
Sense
4
Speed Control
1
GND
2
+12V /Speed Control
3
Sense
4
Reserve
1
GND
2
+12V
3
Sense
Hardware Installation
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