![background image](http://html.mh-extra.com/html/ibase-technology/mb820/mb820_user-manual_604992015.webp)
INSTALLATIONS
MB820 User’s Manual
11
JP4: Clear CMOS Contents
Use JP4, a 3-pin header, to clear the CMOS contents.
Note that the
ATX-power connector should be disconnected from the motherboard
before clearing CMOS.
JP4
Setting
Function
Pin 1-2
Short/Closed
Normal
Pin 2-3
Short/Closed
Clear CMOS
JP5: COM3 RS232 +5V/+12V Power Setting
JP5
Setting
Function
Pin 1-2
Short/Closed
+12V
Pin 3-4
Short/Closed
Normal
Pin 5-6
Short/Closed
+5V
JP6: COM4 RS232 +5V/+12V Power Setting
JP6
Setting
Function
Pin 1-2
Short/Closed
+12V
Pin 3-4
Short/Closed
Normal
Pin 5-6
Short/Closed
+5V