Avalue ECM-QM57 - Manual (Page 13)

ECM-QM57 Quick Installation Guide
ECM-QM57 Quick Installation Guide 13
2.3.7 CPU fan connector (CPU_FAN1/ SYS_FAN1)
Signal PIN
GND 1
CPU_FAN_PWR/ SYS_FAN_PWR 2
CPUFANIN/ SYSFANIN 3
2.3.8 Serial port 1 in RS-422/485 mode (J422/485)
Signal PIN PIN Signal
485RX- 2 1 485TX-
485RX+ 4 3 485TX+
GND 6 5 +5V
CPU_FAN1
SYS_FAN1