
Jumpers and connectors
Connectors on the board link it to external devices such as hard disk drives, a keyboard, or floppy drives. In addition, the board has a number of jumpers that allow you to configure your system to suit your application.
The following tables list the function of each of the board's jumpers and connectors.
Jumpers
Label | Function | 
J2  | Clear CMOS  | 
  | 
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J4  | LCD driving voltage select  | 
  | 
  | 
J5  | System temperature thermal sensor  | 
  | 
  | 
J6  | CPU frequency ratio select  | 
  | 
  | 
J7  | LCD clock signal select  | 
  | 
  | 
J8  | DOC address select  | 
  | 
  | 
J9  | COM2   | 
J10  | COM2   | 
  | 
  | 
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