Jetway Computer NC74 - Manual (Page 15)

10
(6) JP6 (3-pin) : Mini PCI-E Power VCC 3.3V/ Dual 3.3 V Function Select
2-3 closed ： MINI PCI-E VCC= Dual 3.3V
JP6
1-2 closed ： MINI PCI-E VCC= 3.3V
1 3
1 3
JP6
(7) JP9 (6-pin): COM2 Header Pin9 function select
3-4 closed : +12V
JP9
1
1-2 closed: RS232
1 1
5-6 closed : +5V
(8) JP10(6-pin): COM2 Header RS232/485/422 Function Select
3-4 closed : RS485
JP10
1
1-2 closed: RS232
1 1
5-6 closed : RS422