SUPER MICRO Computer X7SBL-LN1/LN2 user manual Clear Cmos, Watch Dog Enable/Disable

X7SBL-LN1/LN2 User’s Manual

Clear CMOS

JBT1 is used to clear CMOS. Instead of pins, this "jumper" consists of contact pads to prevent the accidental clearing of CMOS. To clear CMOS, use a metal object such as a small screwdriver to touch both pads at the same time to short the connection. Always remove the AC power cord from the system before clearing CMOS.

Note: For an ATX power supply, you must completely shut down the system, remove the AC power cord and then close pins 1 and 2 to clear CMOS.

Watch Dog Enable/Disable

JWD controls the Watch Dog function. Watch Dog is a system monitor that can reboot the system when a software application hangs. Close pins 1-2 to reset the system if an application hangs. Close pins 2-3 to generate a non-maskable inter- rupt signal for the application that hangs. See the table on the right for jumper settings. Watch Dog must also be enabled in the BIOS.

Note: When enabled, the user needs to write his/her own application software to disable the Watch Dog Timer.

Watch Dog

Jumper Settings (JWD)

Jumper Setting	Defi nition
Pins 1-2	Reset
	(*default)
Pins 2-3	NMI
Open	Disabled

A. Clear CMOS

B. Watch Dog Enable

A

B

2-24