IEI Integration NOVA-PV-D4251_D5251 v1.10 - Manual (Page 131)

NOVA-PV-D5251/D4251 5.25" SBC
Page 115
Î
Enabled D EFAULT The onboard High Definition Audio controller
automatically detected and enabled
Î
Disabled The onboard High Definition Audio controller is disabled
Î USB Function [Enabled]
Use the USB Function BIOS option to enable or disable USB function support.
Î
Disabled USB function support disabled
Î
Enabled D EFAULT USB function support enabled
Î USB 2.0 (EHCI) Support [Enabled]
Use the USB 2.0 (EHCI) Support BIOS option to enable or disable the USB 2.0 controller
Î
Enabled D EFAULT USB 2.0 controller enabled
Î
Disabled USB 2.0 controller disabled
Î Set Spread Spectrum function [Disabled]
Use the Set Spread Spectrum function 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.
Î
Disabled D EFAULT EMI not reduced
Î
Enabled EMI reduced