Abit IT7-MAX2 User Manual page 37

Hardware Setup
(2). FAN Connectors:
FAN1: Power Fan
FAN2: CPU Fan
FAN3: Spare (No monitor function)
FAN4: Spare (No monitor function)
FAN5: Chassis Fan
(3). CCMOS1: CMOS Memory Clearing Header
This header uses a jumper to clear the CMOS memory. Short pin 2 and pin 3 only when you want to clear
the CMOS memory. The default setting is pin 1 and pin 2 shorted for normal operation.
NOTE: Turn the power off first (including the +5V standby power) before clearing the CMOS memory.
Failing to do so may cause your system to work abnormally or malfunction.
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User's Manual