Acrosser AR-B1991 - Manual (Page 11)

User’s Guide
11
FAN1, 2, SYSFAN: Fan Connector.
CPUFAN: Fan Connector.
JP17 : Selection COM1 is RS232 or RS422/485
Default setting : 1-2 short
JP14,JP15 : Selection COM1(CN16 pin 2,3 and pin 6,7) signals
are RS232 or RS422/485.
Default setting : JP14(1-3,2-4 short),JP15(1-3,2-4 short)
FPIO1 : IR Connector.
PIN DESCRIPTION
1 GND
2 FAN+
(12V)
3 FANSP
PIN DESCRIPTION
1 GND
2 FAN+
(12V)
3 FANSP
4 Control
JP17 DESCRIPTION
1-2 RS232
3-4,5-6 RS422
5-6 RS485
JP14 JP15 DESCRIPTION
1-3,2-4 1-3,2-4 COM1=RS232
3-5,4-6 3-5,4-6 PIN 2,3/6,7=RS422
3-5,4-6 Don’t care PIN 2,3=RS485
PIN DESCRIPTION PIN DESCRIPTION
1 NC 2 NC
3 VCC 4 GND
5 TX 6 RX