Appendix E:
Explanation of Jumpers
To modify the operation of the backplane,
jumpers can be used to choose between 
optional settings. Jumpers create shorts between two pins to change the function 
of the connector. Pin 1 is identified with
a square solder pad on the printed circuit board.
Note: On two pin jumpers, "Closed" means the jumper is on and "Open" means the jumper is off the pins.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
Jumper Settings
Jumper
JP18
JP29
Jumper Settings
Open: Enabled
Closed: Disabled
Open: Normal (Default)
Closed: Reset
Note
Buzzer Reset*
MG9072 Chip Reset
*The buzzer sound indicates that a condition requiring immediate attention has occurred.
The buzzer alarm is triggered by the following conditions:
1.Hard drive failure
2.Fan failure
3.System temperature over 45º Celsius.
