X8STi/X8STi-F/X8STi-3F/X8STi-LN4 User's Manual

CMOS Clear

JBT1 is used to clear CMOS. Instead of pins, this "jumper" consists of contact pads to prevent 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 short JBT1 to clear CMOS.

Watch Dog Enable/Disable

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

Watch Dog

Jumper Settings (JWD)

Jumper Setting

 

Definition

Pins 1-2

 

Reset

 

 

 

(default)

Pins 2-3

 

NMI

 

Open

 

Disabled

 

 

 

 

A. Clear CMOS

B. Watch Dog Enable

B

NIC4 LED

JBMC1

A

LSI 1068E

2-30

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SUPER MICRO Computer X8STI-F, X8STI-LN4, X8STI-3F user manual Cmos Clear, Watch Dog Enable/Disable