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18) BATTERY (Battery Cable Connector)
Thebatteryprovidespowertokeepthevalues(suchasBIOScongurations,date,andtimeinformation)
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.
• Always turn off your computer and unplug the power cord before replacing the battery.
• Replace the battery with an equivalent one. Danger of explosion 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.
• Used batteries must be handled in accordance with local environmental regulations.
1
2
Pin No. Denition
1 RTC Reset
2 GND
19) CLR_CMOS (Clearing CMOS Jumper)
UsethisjumpertocleartheCMOSvalues(e.g.dateinformationandBIOScongurations)andresetthe
CMOSvaluestofactorydefaults.TocleartheCMOSvalues,useametalobjectlikeascrewdrivertotouch
the two pins for a few seconds.
Open: Normal operation (Default setting)
Close: Clear CMOS data
• Always turn off your computer and unplug the power cord from the power outlet before clearing the
CMOS values.
• After system restart, go to BIOS Setup to load factory defaults (select Load Optimized Defaults) or
manuallyconguretheBIOSsettings(refertoChapter2,"BIOSSetup,"forBIOScongurations).