"JBAT1: Clear CMOS Jumper
There is CMOS RAM onboard that is external powered from a battery located on the
motherboard to save system configuration data. With the CMOS RAM, the system can
automatically boot into the operating system (OS) every time it is turned on. If you
want to clear the system configuration, set the jumpers to clear the CMOS RAM."

The JBAT1 is usually open so you follow the maker's instruction which I copied from their manual I found with Google.