SUPER MICRO Computer AS 1020C-3 Watch Dog Enable/Disable, Onboard Speaker Enable/ Disable

Chapter 5: Advanced Serverboard Setup

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. Jumping pins 1-2 will cause WD to reset the system if an application has frozen. Close pins 2-3 to have Watch Dog generate an NMI (non-maskable interrupt). See the table on the right for jumper settings. Watch Dog must also be enabled in BIOS.

Watch Dog

Jumper Settings (JWD)

Jumper Setting	Defi nition
Pins 1-2	Reset
Pins 2-3	NMI

Note: When enabled, the user needs to write their own application software in or- der to disable the Watch Dog timer.

Onboard Speaker Enable/ Disable

The JD1 header allows you to use either an external speaker or the in- ternal (onboard) speaker. To use the internal onboard speaker, close pins 6 and 7 with a jumper. To use an external speaker, remove the jumper and connect the speaker wires to pins 4 (+5V) and 7 (control signal). See the table on the right for settings and the table associated with the Power LED/ Keylock/Speaker connection (previ- ous section) for jumper settings.

Onboard Speaker Enable/Disable

Pin Definitions (JD1)

Pins	Defi nition
6 and 7	Jump for onboard speaker
4 and 7	Attach external speaker wires

Note: Pins 4-7 are used only for the on- board speaker.

SAS Controller Enable/

Disable

JPS1 enables or disables the AIC- 9140W Adaptec SAS controller. See the table on the right for jumper set- tings. The default setting is enabled.

SAS Controller Enable/Disable

Jumper Settings (JPS1)

Jumper Setting	Defi nition
Pins 1-2	Enabled
Pins 2-3	Disabled

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