Foxconn Rattler User Manual download pdf (Page 27)

2-7 OnBoard Debug LED

2-digital LED readout displays hardware status and

enables quick error diagnosis.

OC Switch Button: OC_SW1/2/3

You could press the three buttons to adjust the CPU

clock directly, without to enter BIOS setup or any soft-

ware. This process will not use any system resource,

so there is no effect to the system performance.

■ Normally the OC function is disabled. All the

led lights on these buttons will be turned off.

■ During booting, when the boot screen ap-

pears, press the OC_SW1 button to enter

the OC mode and the led lights will turn

on. At this moment the debug led will show

“0.0”. It means the CPU current clock is

100MHz(Default).

■ In the OC mode, pressing the OC_SW2 but-

ton will increase the CPU clock by 1 MHz per

step, and the debug led code will increase 0.1

at the same time. The debug led code “0.1”

means the CPU clock is 101 MHz.

■ In the OC mode, pressing the OC_SW3 but-

ton will decrease the clock by 1 MHz per step.

This project does not support a clock lower

than 100MHz.

■ When the OC function is enabled by OC_SW1, the overclocking items in BIOS or

software will be availble. It is controlled by the onboard buttons completely.

■ We do not guarantee the system will keep stable status In the overclocking mode.

OC_SW1 OC_SW2 OC_SW3

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Foxconn Rattler User Manual Page 27