User's Manual (1.0)

Chapter 5: Advanced Serverboard Setup

5-25

5-9 Jumper Settings

Explanation of Jumpers

To modify the operation of the serverboard,

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 identiﬁ ed with

a square solder pad on the printed circuit

board. See the diagram at right for an

example of jumping pins 1 and 2. Refer to the

serverboard 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

Jumper

Setting

3 2 1

JBT1 contact pads

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). It is also

recommended that you remove the onboard battery from the serverboard.

2. With the power disconnected, short the CMOS pads with a metal object such

as a small screwdriver.

3. Remove the screwdriver (or shorting device).

4. Reconnect the power cord(s) and power on the system.

Note: Do not use the PW_ON connector to clear CMOS.

Inﬁ niBand (IB) Enable

Both the X9DRT-IBQF and X9DRT-IBFF

serverboards have Jumper JIB1, which

allows you to enable the onboard

Inﬁ niBand connector. The default setting

is 1-2 to enable the connection. See the

table on the right for jumper settings.

Inﬁ niBand Enable (JIB1)

Jumper Settings

Jumper Setting Deﬁ nition

1-2 Enabled (Default)

2-3 Disabled