3
38
USB Configuration
USB Configuration
► USB Functions
This item is used to enable or disable USB function.
► Legacy USB Support
This item is used to enable the support for USB devices on legacy OS. If you have a USB
keyboard or mouse, set to auto or enabled.
► USB 2.0 Controller Mode
This item is used to set the transmission rate mode of USB 2.0. The available settings are :
[High Speed] in 480Mbps; [Full Speed] in 12Mbps.
► BIOS EHCI Hand-Off
Windows XP supports a number of features in the Enhanced Host Controller Interface (EHCI)
specification, but there are a few features that are not implemented. Microsoft said preliminary
support for EHCI BIOS handoff will be available in Windows XP SP2.
This item allows you to enable support for OS without EHCI hand-off feature.
This is a workaround for OS without EHCI hand-Off support .
The EHCI ownership change should claim by EHCI driver.
If USB mass devices are connected to the computer, the following item will appear:
► USB Mass Storage Device
After pressing <Enter>, you can set the reset delay for the USB mass storage device. There
are many different emulation types of this USB device, such as [Auto], [Floppy], [Forced FDD],
[Hard Disk] and [CDROM] can be selected. Select [Auto], USB devices less than 530MB will
be emulated as Floppy and remaining as hard drive. [Forced FDD] option can be used to force
a HDD formatted drive to boot as FDD(Ex. ZIP drive).
CMOS Setup Utility - Copyright (C) 1985-2009, American Megatrends, Inc.
USB Configuration
USB Configuration
Help Item
Module Version - 2.24.3-13.4
USB Devices Enabled :
Disabled
None
2 USB Ports
4 USB Ports
USB Functions
14 USB Ports
6 USB Ports
Legacy USB Support
Enabled
8 USB Ports
USB 2.0 Controller Mode
High Speed
10 USB Ports
BIOS EHCI Hand-Off
Enabled
12 USB Ports
14 USB Ports
↑↓←→:Move Enter:Select +/-/:Value F10:Save ESC:Exit F1:General Help
F9:Optimized Defaults
14 USB Ports
Options