ASRock 990FX Extreme3 manual Jumpers Setup, JumperSetting Clear Cmos Jumper

2.8 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.

JumperSetting Clear CMOS Jumper

(CLRCMOS1)
(see p.2, No. 22)	Default Clear CMOS

Note: CLRCMOS1 allows you to clear the data in CMOS. The data in CMOS in- cludes system setup information such as system password, date, time, and system setup parameters. To clear and reset the system parameters to de- fault 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 finished updating the BIOS, you must boot up the system first, and then shut it down before you do the clear-CMOS action. Please be noted that the password, date, time, user default profile, 1394 GUID and MAC address will be cleared only if the CMOS battery is removed.

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ASRock 990FX Extreme3 Motherboard