SUPER MICRO Computer 6012P-6 user manual Jumper Settings, Explanation Jumpers, Cmos Clear

Chapter 5: Advanced Motherboard Setup

5-9 Jumper Settings

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. See 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	3 2 1
Pins

Jumper

Cap

3 2 1

Setting

Pin 1-2 short

CMOS Clear

Refer to the table on the right for the JBT1 jumper settings to clear CMOS. Always remove the AC power cord from the system be- fore clearing CMOS.

Note: For an ATX power supply, you must completely shut down the system, remove the AC power cord and then use JBT1 to clear CMOS. Replace JBT1 back to the pin 1-2 position before powering up the system again. Do not use the PW_ON connector to clear CMOS.

CMOS Clear Jumper Settings
(JBT1)
Jumper
Position	Definition
1-2	Normal
2-3	CMOS Clear
Position	Position
1-2	2-3
Normal	CMOS Clear

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