Jumpers - Supermicro SuperWorkstation SYS-531AD-I User Manual

4.4 Jumpers

Explanation of Jumpers
To modify the operation of the motherboard, 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. Refer to the diagram
below for an example of jumping pins 1 and 2. Refer to the motherboard layout page for
jumper locations.
Note: On two-pin jumpers, "Closed" means the jumper is on and "Open" means the
jumper is off the pins.
Connector Pins
Clear CMOS/SW1 Button
Clear CMOS Button is used to clear the saved system setup configuration stored in the CMOS
chip. All the settings will be erased and restored to the factory defaults after pressing this
button. On this motherboard, there are two buttons which built-in this function. One is the
SW1 button located on the I/O back panel and the other is the Clear CMOS button located
next to the Reset Button.
Power Button
In addition to the soft power switch provided in JF1, your motherboard is equipped with a
'soft' power button on the motherboard. This switch works the same way as the soft power
switch on JF1.
Reset Button
When pressed, the Reset Button will reset the system and reboot. This action will erase
everything in memory and restart the system.
Top View
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Chapter 4: Motherboard Connections
Connector Pins with a Jumper
installed on Pins 1 and 2