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User's Manual
Figure 3.16
Legacy USB Support
This item is used to set the USB interface support. If you need to support USB devices under DOS, such
as U disk, USB keyboard, etc., set this item to [Enabled] or [Auto]. Otherwise, select [Disabled].
USB 2.0 (EHCI) Support
[Enabled]: Allows USB EHCI transport protocol with a maximum transfer rate of 480Mpbs
[Disabled]: Disable the USB2.0 interface, the traditional transfer rate is 12Mpbs.
USB 2.0 Controller Mode
This item sets USB 2.0 device works in full speed mode (FullSpeed) or high speed mode (HiSpeed).
EHCI Hand-off
This option is used to determine whether to cut the USB port into USB 2.0 mode before entering the OS.
Set to Disable, It will operate in USB 1.1 compatibility mode before giving ownership to the OS.
USB Mass Storage Driver Support
USB mass storage device support switch.
USB Transfer time-out
This item Sets the timeout period for control, batch, and interrupt transmission. The default is 20 seconds.
Device reset time-out
This item sets boot command timeout of the large capacity USB disk. The default is 20 seconds.
Device Power-up Delay
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