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6) CPU_OPT (CPU Fan/Water Cooling Pump Header)
The fan/pump header is 4-pin and possesses a foolproof insertion design. 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 speed control function requires the use of a fan with fan
speed control design.
CPU_OPT
1
Pin No.
Definition
1
GND
2
Voltage Speed Control
3
Sense
4
PWM Speed Control
Connector
CPU_FAN
SYS_FAN1
FAN2_PUMP
CPU_OPT
Maximum Current
2A
2A
2A
2A
Maximum Power
24W
24W
24W
24W
•• 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.
7) 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.
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.
BAT
(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.
•• Always turn off your computer and unplug the power cord before replacing the battery.
•• Replace the battery with an equivalent one. Damage to your devices may occur 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.
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