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BIOS
Legacy USB Support
Enable support for legacy USB. AUTO option disables legacy support if no
USB devices are connected.
The choice: Enabled (Default); Auto; Disabled
EHCI Hand-Off
Allow you to enable support for operating systems without an EHCI hand-off
feature. Do not disable the BIOS EHCI Hand-off option if you are running a
Windows® operating system with USB device.
The choice: Enabled (Default); Disabled
USB hardware delays and time-outs
USB transfer time-out — The time-out value for control, bulk, and interrupt
transfers. Default setting: 20 sec
Device reset time-out — USB mass storage device start unit command time-
out. Default setting: 20 sec
Device power-up delay — Maximum time the device will take before it prop-
erly reports itself to the host controller. 'Auto' uses default value: for a Root
port it is 100ms, for a Hub port the delay is taken from hub descriptor. The
choice: Auto (Default); Manual
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