Jetway Computer NF9B - Manual (Page 17)

12
(12) JP17 (6-pin): COM6 Header RS232/485/422 Function Select
3-4 closed : RS485;
JP17
1
1-2 closed: RS232;
1 1
5-6 closed : RS422
(13)COPEN (2-pin): Case Open Message Display Function Select
Case Open Display Function
1-2 Short： Case Open
COPEN
1-2 Open： Normal;
Pin 1-2 shorted: Case open display function enabled. 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.