User`s manual

33 Chapter 2
2.26 Serial Port Pin-out selection Signal (RI)/Power
(5V or 12V) (J15)
User’s can use jumper settings to change pin outs of the RI pins of
COM1~COM6.
2.27 SW1 CPU selection (SW1)
Make sure the switch setting of SW1 correspond to the CPU type you are
using, if the switch setting of SW1 is incorrect, the system will NOT boot
to avoid from CPU damage.