Intel Celeron 1047UE/847 Technical Manual page 15

(3) JBAT1 (3-pin): Clear CMOS
(4) JCOMP1 (6-pin): COM1 Header Pin9 Function Select
JBAT1
3
1
1-2 Closed： Normal；
CMOS Clear Setting
JCOMP1
1
1-2 Closed: RS232;
3-4 Closed : +12V;
10
3
1
2-3 Closed：Clear CMOS
1
1
5-6 Closed : +5V