Supermicro SuperServer AS-3015MR-H10TNR Handleiding (94 Pagina's)

Handleiding

45

Chapter 4: Motherboard Connections

4.3 Jumpers

Explanation of Jumpers

To modify the operation of the motherboard, jumpers are used to choose between optional

settings. Jumpers create shorts between two pins to change the function associated with it.

Pin 1 is identied with a square solder pad on the printed circuit board. See the motherboard

layout page for jumper locations.

Note: On a two-pin jumper, "Closed" means the jumper is on both pins and "Open" indicates

the jumper is either on only one pin or has been completely removed.

Connector

Pins

Jumper

Setting

3 2 1

CMOS Clear

JBT1 is used to clear CMOS, which will also clear any passwords. Instead of pins, this jumper

consists of contact pads to prevent accidentally clearing the contents of CMOS.

To Clear CMOS

1. First power down the system and unplug the power cord(s).

2. Remove the cover of the chassis to access the motherboard and remove the battery

from the motherboard.

3. Short the CMOS pads with a metal object such as a small screwdriver for at least four

seconds.

4. Remove the screwdriver (or shorting device).

5. Replace the cover, reconnect the power cord(s), and power on the system.

Notes: Clearing CMOS will also clear all passwords. Do not use the PW_ON connector to

clear CMOS.

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