Avalue ERX-Q77 - Manual (Page 11)

Quick Installation Guide
Quick Installation Guide 11
2.3 Setting Jumpers & Connectors
Jumpers
Label Function Note
CLCMOS1
Clear CMOS Normal
1
Clear CMOS
1
PSON1
AT/ATX Mode ATX MODE AT MODE
CN2
COM1 RS232/422/485 SETTING
RS232
RS422
RS485
CN4 COM5 RS232/485 SETTING
1 2
RS232
1 2
RS485
1 2
JCOMPWR1 COM3 POWER SETTING
1
2
Ring
1
2
+12V
1
2
+5V
1
2
JBKLVOL1 LVDS Backlight power selection
1
+3.3V
1
+5V
1