IBASE MI941 - Manual (Page 14)

INSTALLATIONS
JP1, JP2, JP3: RS232/422/485 (COM2) Selection
COM2 is selectable for RS232, RS-422 and RS-485.
COM2
Function
RS-232 RS-422 RS-485
Jumper
Setting
(pin closed)
JP1:
1-2
JP2:
3-5 & 4-6
JP3:
3-5 & 4-6
JP1:
3-4
JP2:
1-3 & 2-4
JP3:
1-3 & 2-4
JP1:
5-6
JP2:
1-3 & 2-4
JP3:
1-3 & 2-4
JP6: Clear CMOS Contents
Use JP6, a 3-pin header, to clear the CMOS contents.
Note that the ATX-power connector should be disconnected from the
motherboard before clearing CMOS.
JP6 Setting Function
Pin 1-2
Short/Closed
Normal
Pin 2-3
Short/Closed
Clear CMOS
10 MI941 User’s Manual