Advantech IPPC-9120 Cmos Clear for External RTC JP8, 3 COM3 / COM4 pin 9 output type setting JP6

3.3.3 COM3 / COM4 pin 9 output type setting (JP6)

Table 3-7: COM3/RI pin setting (JP6)

*Normal operation		+5 V output		+12 V output
6	5	6	5	6	5
4	3	4	3	4	3
2	1	2	1	2	1

* default setting

Note:	Pins 1, 3 and 5 are for COM3.
	Pins 2, 4 and 6 are for COM4.

3.4 CMOS Clear for External RTC (JP8)

Warning: To avoid damaging the computer, always turn off the power supply before setting “Clear CMOS”. Set the jumper back to “Normal operation” before turning on the power supply.

Table 3-8: Clear CMOS / External RTC (JP8)

*Normal operation		Clear CMOS
1	2	1	2

* default setting

Chapter 3 Jumper Settings and Connectors 37