AAEON PFM-541I - Manual (Page 20)

P C / 1 0 4 C P U M o d u l e P F M - 5 4 1 I
Chapter 2 Quick Installation Guide 2 - 8
2.5 List of Jumpers
The board has a number of jumpers that allow you to configure your
system to suit your application.
The table below shows the function of each of the board's jumpers:
Jumpers
Label Function
JP1 CFD Master/Slave Selection
JP2 RS-232 Ring/5V Selection
JP3 LCD Clock Selection and Clear COMS