Asrock X79 Extreme3 X79 EXTREME3 用户手册

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2.12  Jumpers Setup

The illustration shows how jumpers are 

setup. When the jumper cap is placed on 

pins, the jumper is “Short”. If no jumper cap 

is placed on pins, the jumper is “Open”. The 

illustration shows a 3-pin jumper whose 

pin1 and  pin2 are “Short” when jumper cap 

is placed on these 2 pins.

Clear CMOS Jumper 

(CLRCMOS1)  

(see p.12,  No. 21)

 

 

Note:  CLRCMOS1 allows you to clear the data in CMOS. To clear and reset the 

 

system parameters to default setup, please turn off the computer and unplug 

the power cord from the power supply. After waiting for 15 seconds, use a 

jumper cap to short pin2 and pin3 on CLRCMOS1 for 5 seconds. However, 

please do not clear the CMOS right after you update the BIOS. If you need 

to clear the CMOS when you just fi nish updating the BIOS, you must boot 

up the system fi rst, and then shut it down before you do the clear-CMOS ac-

tion. Please be noted that the password, date, time, user default profi le, 1394 

GUID and MAC address will be cleared only if the CMOS battery is removed. 

Clear CMOS

Default

The Clear CMOS Switch has the same function as the Clear CMOS 

jumper.