The only jumper is JP3 to clear CMOS:

The CMOS RAM is powered by the onboard button cell battery. To clear the RTC data:

(1) Turn off your computer
(2) Place the jumper cap onto the pinpair 2-3 at least 6 seconds to clear CMOS
(3) Place the jumper cap onto the pinpair 1-2 to Normal
(4) Turn on your computer until CMOS checksum error appears
(5) Hold down the Delete key when boots
(6) Enter the BIOS Setup to re-enter user preferences.