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MS-7640JumpersClear CMOS Jumper: JBAT1There is a CMOS RAM onboard that has a power supply from an external battery tokeep the data of system configuration. With the CMOS RAM, the system can automaticallyboot OS every time it is turned on. If you want to clear the system configuration,set the jumper to clear data.11 1JBAT1 Keep Data Clear DataChapter 2ImportantYou can clear CMOS by shorting 2-3 pin while the system is off. Then return to 1-2pin position. Avoid clearing the CMOS while the system is on; it will damage the mainboard.2-17
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