ASROCK Z77 OC Formula User Manual download pdf (Page 39)

2.11 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.

Jumper Setting Description

Clear CMOS Jumper





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

          

-



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

Clear CMOSDefault

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

jumper.

BIOS Selection Jumper





Note: This motherboard has two BIOS onboard, a main BIOS and a backup BIOS,

which enhances protection for the safety and stability of your system. Nor-

mally, the system works on the main BIOS. However, if the main BIOS is

corrupted or damaged, please use a jumper cap to short pin2 and pin3, then

the backup BIOS will take over on the next system boot. After that, short pin1

and pin2 again, then use “ASRock Instant Flash“ or “ASRock Internet Flash“



system operation. For the sake of system safety, users cannot update the

backup BIOS manually.

Backup BIOSDefault



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ASROCK Z77 OC Formula User Manual Page 39

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