IEI Technology IMBA-9454ISA, User Manual

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IMBA-9454ISA ATX Motherboard
Page 179
Spread Spectrum Mode [Enabled]
Use the Spread Spectrum Mode option to reduce the EMI. Excess EMI is generated
when the system clock generator pulses have extreme values. Spreading the pulse
spectrum modulates changes in the extreme values from spikes to flat curves, thus
reducing the EMI. This benefit may in some cases be outweighed by problems with
timing-critical devices, such as a clock-sensitive SCSI device.
Disabled
EMI not reduced
Enabled D
EFAULT
EMI reduced
Audio Controller [AC’97 Audio]
The Audio Controller option enables or disables the audio controller.
AC’97 Audio D
EFAULT
The on-board AC’97 audio controller is enabled.
All Disabled The on-board audio controller is disabled.
OnBoard LAN1 [Enabled]
The OnBoard LAN1 option enables or disables the onboard LAN1.
Disabled Onboard LAN1 device manually disabled
Enabled D
EFAULT
The onboard LAN1 device automatically detected and
enabled
OnBoard LAN2 [Enabled]
The OnBoard LAN2 option enables or disables the onboard LAN1.
Disabled Onboard LAN2 device manually disabled
Enabled D
EFAULT
The onboard LAN2 device automatically detected and
enabled