Clear Cmos (Jp4); Table 1-7 Jp8 Jumper Definition; Table 1-8 Jp4 Definition - Advantech MIC-3359 User Manual

JP8 – COM1 Settings
Default

1.3.2 Clear CMOS (JP4)

This jumper is used to erase CMOS data and reset the system BIOS information.
Follow the procedures below to clear the CMOS.
1、 Turn off the system.
2、 Close jumper JP4 (2-3) for about 3 seconds.
3、 Set jumper JP4 as Normal.
4、 Turn on the system. The BIOS is reset to its default setting.
JP4 – Clear CMOS
Default Normal
Clear CMOS

Table 1-7 JP8 jumper definition

RS232

Table 1-8 JP4 definition

RS422
MIC-3359 User Manual --- Page 9
RS485