MSI MS-9A08 - Manual (Page 63)

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MS-9A08
Legacy USB Support
Set to [Enabled] if you need to use any USB 1.1/2.0 device in the operating
system that does not support or have any USB 1.1/2.0 driver installed, such
as DOS and SCO Unix.
USB 2.0 Controller Mode
This setting specifies the operation mode of the onboard USB 2.0 controller.
BIOS EHCI Hand-Off
This setting allows you to enable or disable a workaround for operating sys-
tems without EHCI (Enhanced Host Controller Interface) hand-off support.
The Enhanced Host Controller Interface (EHCI) specification describes the
register-level interface for a Host Controller for the Universal Serial Bus (USB)
Revision 2.0.
USB Mass Storage Device Configuration
USB Mass Storage Reset Delay
This setting controls the number of seconds the POST waits for the USB
mass storage device after the start unit command is sent.
Emulation Type
This setting enables you to set the type of device you want the USB mass
storage device to emulate.
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