Avalue ECM-QM87 - Manual (Page 25)

User ’s Manual
ECM-QM87R/ ECM-QM87 User ’s Manual 25
2.4.9 COM 1 RS-422-485 mode (RS422_1)
Signal PIN PIN Signal
485_422TX1- 2 1 422RX1-
485_422TX1+ 4 3 422RX1+
+5V 6 5 GND
Note:
J422/485 is available after modify the mode of COM1
in BIOS setting
2.4.10 LCD inverter connector (JBKL1)
Signal PIN
+12V 1
GND 2
BKLEN 3
VBRIGHT 4
+5V 5