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Bios Settings

Chapter 4

Network Application Platforms

USB Configuration Settings

You can use this screen to select options for the USB

Configuration. Use the up and down <Arrow> keys to

select an item. Use the <Plus> and <Minus> keys to

change the value of the selected option. The settings are

described on the following pages.

Legacy USB Support

This option enable or disable the support for USB devices

on legacy operating systems (OS), e.g., Windows ME/98/

NT, and MS-DOS. Normally if this option is not enabled,

any attached USB mouse or USB keyboard will not become

available until a USB compatible operating system is fully

booted with all USB drivers loaded. When this option is

enabled, any attached USB mouse or USB keyboard can

be used on the system even when there is no USB drivers

loaded on it.

Option Description

Auto Allow the system to detect the presence of USB

devices at startup. If detected, the USB controller

legacy mode is enabled If it is not detected, the

USB controller legacy mode is disabled.

Enabled Enable the support for USB devices on legacy

operating system

Disabled Disable this function.

EHCI Hand-Off

It allows you to enable support for operating systems which do

not have the Enhanced Host Controller Interface hand-off (EHCI

hand-off ) feature for USB devices.

Option Description

Enabled Enable this feature

Disabled Disable this feature

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