11
(7) JP12 (6-pin): COM4 Header RS232/422/485 Function Select
3-4 closed : RS485;
JP12
1-2 closed: RS232;
1
5-6 closed : RS422
1
1
(8)CASE_OPEN(2-pin): Case Open Message Display Function Select
Pin 1-2 shorted: Case open display function enabled. Use needs to enter BIOS and
enable
‘
Case Open Detect
’
function. In this case if you case is removed, next time
when you restart your computer a message will be displayed onscreen to inform you
of this.