Manual

ECM-QM77
26 ECM-QM77 User’s Manual
2.4.7 System fan connector (SYS_FAN1)
Signal
PIN
GND
1
+12V
2
SYSFANIN
3
SYSFANOUT
4
2.4.8 COM 1 RS-422-485 mode (J422/1)
Signal
PIN
PIN
Signal
485_422TX-
2
1
422RX-
485_422TX+
4
3
422RX+
+5V
6
5
GND
Note:
J422/485 is available after modify the mode of COM1
in BIOS setting