AAEON PFM-540I Rev.А - Manual (Page 22)

P C 1 0 4 C P U M o d u l e P F M - 5 4 0 I
Chapter 2 Quick Installation Guide 2 - 10
2.7 CFD Master/Slave Selection (JP1)
JP1 Function
1-2 Slave
2-3 Master (Default)
2.8 RS-232 Ring/5V Selection (JP2)
JP2 Function
COM1
1-3 +5V
3-5 Ring (Default)
COM2
2-4 +5V
4-6 Ring (Default)
2.9 LCD Clock Selection and Clear CMOS (JP3)
JP3 Function
LCD Clock
1-3 Normal (Default)
3-5 Reverse
CMOS
2-4 Protected (Default)